Okay, dumb hot take probably, but I think the flurry rush in BotW/TotK feels... not unfinished, but underexplored. Sure, it's inarguably unbalanced (I did see a neat idea a while back that suggested the Flurry Rush should maybe use stamina, which could help with balancing? It'd need tweaking...), but I think the baseline idea in the earlier game - that is, a risk/reward type deal where you can use the correct dodge at the right time while in harm's way for a more powerful state - is pretty good. But...
...come on, why is mashing the Y button to attack multiple times in rapid succession the
only thing you can do? Okay, that's probably not a fair criticism but like... you're already jumping, right? So why not be able to whip out your bow into bullet-time and get a stun, letting you follow up. That feels like it'd at least give you a bit more of an option than just "well done, you've timed the button correctly, now mash!"
I saw one concept somewhere that proposed uses for the other face buttons, and while I recognise the mindset behind that, I'm not 100% sure doing that with
all of the face buttons would be a good idea? But like, at least being able to use your other weapon could be nice, rather than just switching to whatever melee weapon has the biggest number on it. And, honestly, I think this is just a smaller element of a bigger issue with melee combat being a little... underdeveloped in those games. (Yes, it doesn't need to be
SoulCalibur, but... a little more, maybe?)