They're not going to take every suggestion though. Most people want everything at once and they ask for too much and ultimately don't know what's best for the game.
More commonly, they ask for financially implausible things that would actively turn off any but a very small minority of the fanbase. Remember, if it doesn't cater to you precisely, no matter how specific or strange your tastes, the entire series is ruined forever
Okay, now my actual serious post content (or the serious stuff that isn't satirically funny): They are professional game designers and also avid gamers. We have been suggesting before the actual announcement, and many of the things I asked/hoped for have already been explicitly implemented (contextual animations, back to strangeness, AoE spells, more stylized artistic direction). We are not professional game designers, with very few exceptions I assume, and so while we know what we individually want, we don't know how difficult it is to implement particular features, have them be both balanced and fun, and juggle angry moral guardians who stack the odds against games as an art form, a fanbase (which is a word that has an opposite real definition to its listed one at most times nowadays), meddling publishers, and a budget that is less than what they need because games aren't taken seriously.
So while we can go ahead and say "I want this," don't demand anything because they have enough to worry about.