Aqua is now useful? This game is no longer canon friendly /j
Jokes aside, I'm very excited by the upgrade. Not only a lot of new content for the story, but also tons of updates for the combat system, which is one major attraction for this game.
That being said, even without testing I can already tell, 50% hp execution is way too high. Usually in other games the threshold is 30 or 20%, otherwise it's too strong against bosses and minibosses.
But also, I fear that giving resistance for bosses against debuffs and DoTs will make their battles harder and at the same time, simpler. The combat is enjoyable precisely because it requires some strategy, and removing tools from the formula makes the strategies available be more straightforward. I do understand however that some strategies may be too effective as well, causing the exact same problem of being used repeatedly regardless of the situation, and that's hard to balance. I'll be able to tell better how this change affects the enjoyment of boss battles when it comes out to the public, for now I hope it's not full immunity for all bosses, and instead just that some bosses have different resistances to different de buffs.