Once they have completed the entire Pokemon World, they will then make a MMO Pokemon game.
But...why? Just because they run out of space (assuming Pokemon games still sell, that is)? Change the entire format of the game? Remember that Nintendo aren't in the MMO game-making department, and I really doubt they would do it, nor let someone else do it with a francise that sells well enough on handhelds (and consoles).
They could just create a brand new set of regions, or base it on another place easily enough, rather than call it a day. The region of Orre for instance, in Pokemon Colosseum and XD is actually based off the American state of Arizona.
I think the Pokedex should be made much smaller. Here is my personal list...
*insert list of doom here*
I want there to only be 366 Pokemon. 1 Pokemon for each day of the year, including Leap Year. The added evolutions and preevolutions have got to stop and be removed! There shouldn't be 50 million means to evolving your Pokemon. There should be 6 useable items (Fire Stone, Leaf Stone, Moon Stone, Sun Stone, Thunder Stone, Water Stone), 1 held item (King's Rock), 1 event (Upgrading Porygon), trading and gender based evolutions.
...Ya huh. Well, it's your opinion and all, but I will say that I don't see them changing what Pokemon are there at all. Ain't happening, really - heck, what Pokemon species are there has been set by canon (all of them) and the creators of Pokemon ever since the beginning - they aren't going to just pretend they don't exist all of a sudden, or change the evolutions and so forth.
Why those 366 Pokemon? Because one is cooler than another in your opinion? What about other people's opinions then? Heck, why 366 - don't see any real link between days in a year and Pokemon, tbh, and the lack of numbers with any set meaning being used for the total amount of known Pokemon doesn't help either. What does cutting certain evolutions - even 2nd-stage evolutions - do, really? Making Sentret and Furret look like their 3rd gen counterparts... sounds over-the-top to me. =/ Sure, it's ok to say ''bah, I hate these Pokemon and think they're stupid" - but it ain't going to happen, that I can assure you. Even Dunsparce is here to stay. =P
Ho-oh would be the 'God Pokemon' available in all regions.
What has in any canon suggest that Ho-Oh is the god Pokemon? =/
Tyrogue has a 50/50 chance to evolve into either Hitmonchan or Hitmonlee. I jokingly put Tyrogue's name as Hitmonnorris, to follow the theme of famous martial artists.
Oh dear...
TBH, this seems a bit poorly thought out - no offence. Seem you've just came up with a few ideas without think if they are feasible, and then took out all of the Pokemon that you didn't like the look of. =/
At any rate - I think there will be a 5th gen - and many more generations as well. But only if the Pokemon games continue to sell well. As long as the series brings in the millions of sales, Nintendo will be sure to find people to come up with new games (not that it needs that much thinking - the main core handheld series follow a similar formula to each other).