Eh, I'm REALLY doubtful of the adding of new types. But as there's a thread from before that I posted in, I'll just use those... -_-
Basically, there is no giant imbalance of doom evident in the 4th generation akin to the one that was clearly evident in R/B/Y. Psychic Pokemon ran rampent completely amongst other problems, hence why they added the two new types. Now there is no need for it - some imbalence but hardly anything drastic, and new types could disbalence it anyway.
Plus, adding new types may bring determental affects. If you happen to know how Hidden Power works for the 3rd/4th gen, than you'd know that the type of Hidden Power you get (and the power) depends on your Pokemon IVs. If suddenly new types were added in, a reinvention of the IV system would have to be implemented (unless they were really clever about it). And that could stop Pokemon being able to be traded to (possible) 5th gen games. That was why (at least partly) you can't trade from the 2nd to 3rd gen - the IVs changed dramatically.
And I'd like to be able to trade between 4th/5th gen games if they come out (I think there would be a 5th gen though), personally. -_-
Like above: what's to say that new types wouldn't make it worse? Not only would new types be added in a new gen, but more than likely new Pokemon and abilities and what-not - already changes to the 'metagame'. New types may just throw it out of whack again, particularly when there is nothing that bad that needs fixing. Any system will have inbalences in it, but the current one is pretty stable.
And new types would result in the need for changes to other things as well, such as IVs. That in itself is a drastic change, and would have 'negative' side-effects. A bit much...
AND (this was in response to ideas on the 'Digital/Ancient' type in another thread):
That however would result in type changes to several Pokemon as you said, such as Porygon, and Mamowsine. That may result in problems... and disagreements (plus would screw the heck out of previous canon). The additions of Dark-type Pokemon didn't change any of the 1st gen Pokemon and Steel only affected the Magnemite line - but now even more changes would occur, which would be... well, odd to say the least, in that it would then appear that these Pokemon were NEVER of that type, but really another type altogether.
Plus there's the problem with the Pokemon such as Mamoswine which already have a double typing (in this case, ice/ground). What happens then - losing one of those typings doesn't really work for aforementioned reasons, and they won't be giving Pokemon three typings now either, IMHO.
Then there are the other reasons previously mentioned... such as throwing the playing field out of balence rather than 'fixing it' (it's pretty much ok atm now, unlike the 1st gen situation), etc, etc.
Not bad thinking with them though, mind - but not that viable if you look at the nitty-gritty. =/
What would you do if you added a type like that that would change old Pokemon's typing, especially for those with due typings already? Make a max of three? That would surely change the metagame too much, and complicate things. Replace one of the original typing? Well, that screws with canon then regarding what that Pokemon was, and to say that Mamoswine isn't a ground or an ice-type, or that Aerodactyal was not a rock or a flying-typed Pokemon is... well, dumb, tbh. =/
Also, some of these typings are a bit...err. The wind type? One already has the flying type. Mostly use for bird-like Pokemon, but wind-attacks like Gust, and Whirlwind, and so forth have been classed in it. Driftloon which floats in the wind comes under Ghost/Flying. (And thus you can apply the previous point to him too).
Wood type - grass already exists - basically a different name, really.
Digital - err, I don't see it TBH. Is there much of a point for it? Same for Virus - for me, they don't really fit in. =/
And Light. Well, one can argue that Psychic is the 'Light' side to the Dark Pokemon - after all, moves like Morning Sun, and so forth bear similarites. But why is there a need for it? Nintendo didn't seem to think so, when they made the dark type - and not for 3 generations, and about a decade. Don't see them changing such things then, especially when there is no actual reason for them other than that it might tie in nicely, and that some fans won't like it. If it wrecks the battle system, then that far outweighs the pros, and that would be their priority.
Its time for change and thats what I have to say. If dark pokemon are always dark(in color) or mean I think there should be something to oppose that and Psychic doesnt fit.
Why is it time for change, though, from Nintendo's point of view? In their mind, there was an inbalence in the 1st gen involving Psychic types (and other game mechanics regarding moves) as well, so they changed it by adding new types. And 3 gens later, they have seen no need to do anything as drastic as to add more types, as there was no need to. If they wanted to have an 'opposite' to Dark type Pokemon, they could have doen that in the first place, or done it earlier. But as the game was balenced more or less - and still is, there is no need for change, really.
Plus Nintendo don't change things that much if there's no need. Heck, look at the game formula in terms of gyms and beating the Champion and a criminal Team, and how long they've continued with that for their main best-sellers.
1. Shadow. Yes, I know there were "Shadow Pokemon" in Orre, and that's precisely why I want an actual type. However, unlike the Shadow Pokemon of Orre, this Shadow Pokemon type would be weak against Dark, itself (like Ghost and Dragon), and Light (will be mentioned below). But I would really like a type like this.
Again - adding a new type which is called the same thing as a different type goes against canon established before - although arguably by a different game company on a different system, they used the very same game mechanics and all. Plus, given that moves like Shadow Ball, Shadow Punch, etc come under the ghost type, then changing them too (and leavingt he ghost type with next-to-no moves) is a big problem to overcome. Plus all the other stuff.
So my views and many points on why there will be more than likely no new types. Sorry to be a stick-in-the-mud and all, but feasibly and logically, it's...well, it isn't really, and the danger of messing up the system is something Nintendo probably won't want to risk.
