Actually changing some of terminology after almost 1 year the engine released, is a bad idea imho. Because community tutorials or answerhub has tons of solutions about some problems or tutorials with those names. For example after you change persona or cascade to something different, beginners will have a lot trouble to find old tutorials or questions about them and they will need to find they had old names too.
Yea names are a little bit confusing when you just start to unreal engine but it’s not that hard to learn them with the documentation or from tutorials. I came from unity too, and people comes from unity, wants names like they see in unity engine. But most of them not familiar to unreal workflow or classes. (like the ones say “pawn” should be “character”). I think it’s better to learn the engine how epic uses it because they have the most experience both with editor and unreal API. It’s like when you try to learn another 3d software, if you try to imitate or bend your new software (especially shortcuts), like in your old software is always the worst idea. Please just don’t change the engine for english speakers understand easily (like animation editor) because engine is not for every english speaker, it’s for game developers and radicalizing game developing for any english speakers will make current developers to learn things again (like changing actor to something different will make trouble for API too) or finding old tutorials and answers harder.