quite frankly, no one should go over every tiny difference. To me the conversation goes something like thisI think you're missing the point. Which is, sure, you can have a conversation--and every group should have conversations about things like this--but nobody is going to be able to go over every single tiny difference
Are we all playing 2024 chars?
No? Ok, Joe, so you stick to a 2014 class. Do you also want to stick with the 2014 feats and spells, or are you using the 2024 ones?
You do not independently decide this for every little detail.