Missing in BG3 is fine compared to D&D, at least in smaller encounters. Why? Because, typically, 1 player is controlling 4 units. It's just a miss on one unit.

If I were to go in and do a redesign because 'missing isn't fun', I'd put in a 'graze' mechanic, so missing by some small amount would do some damage. That way, you'd feel like something was happening. Would be easy to crunch the numbers on rebalancing.

I'm also curious to see where Larian said EA was Hard difficulty.