[Sword & Shield] How much news should we get prior to release?

Okay, I've seen your replies and I thought I'll put my two cents in.

What they should reveal.

- 20 Pokémon at the most (along with the starters and legendaries)

- The villainous team.

- Various tidbits of info.

- The rival.

- One new feature, such as mega evolution, Z moves, etc.

I would like to get as much information as possible, actually, just to be sure that these games are going to be actually worth it. I don't want to keep picking up Pokemon games if the quality of the gameplay doesn't drastically improve.

Then again, I'll probably wait a couple of weeks after release to give everyone else plenty of time to post the information I need, so I don't necessarily need the information before the release date.

I would like to see roughly 15% of the Pokedex, and preferably no demo at all. No more DATAMINING! That final Lusamine battle would have been s awesome if I didn't see the leak.
The evil team, of course.
The Professor and what he studies, hopefully giving us a small hint towards potential plot.
And the rival. That's it. I don't even want to see the final starter evolutions