I think they will probably respond to the nat dex thing, if only due to the fact that game freak always listens to the most easily viewable issues people talk about in a game and adjust for the next gen (the removal of customization in ORAS for example). my issue is that I don't think they will learn how to create a game that truly is well developed.
Since my time of posting about it in the thread I have played through the entirety of SWSH and honestly, it felt like one of those games where my opinion before playing it was dead on. It really feels like they had 20 different ideas and the dev team just said "fuck it, lets put it all together it will all work out" causing alot of the design decisions clash with another. It was everything I hated about gens 6/7 aped up due to the lack of polish, the dex is the least of gen 8's issues. It really doesnt feel like there was a core idea or design philosophy when they made it.
I'm not one of those people that thinks pokemon needs a "MAJOR BOTW TIER SHAKEUP ZOMG" and I'm sure many aren't either, it needs more of a luigi's mansion 3 or animal crossing aproach, looking at all of the games before it and noticing what people loved about those entries, while having a clear vision for what to do foward for the series.
Also while linearity is fine, I swear to god if the next game in the series railroads as hard as the other games in the 3d era people will start to get pissed. even kids hate that shit