We simply ... ask that they follow the rules more closely. That is all. Because several of their homebrew rules isn't there because its impossible to be transitioned otherwise into the game, but because Larian decided they didn't see it as fun [or balanced]. And we disagree with them on that. That, is our feedback.
+1
Obviously there are 5e things that people don't find fun (e.g., the Ranger class). But even then it's still valid to analyze whether Larian's replacement mechanic is better or worse than the 5e rule. Larian is the DM and is technically allowed to make any changes they want, but if they make bad changes then we should and will call them out on that.