Yes. But it helps to have a common base to talk from. Again-there's nothing wrong with making 5E more lethal and less generous on wealth, both mundane and magical, but it's NOT the standard that's being deviated from here.
To the OP:
I don't think I'd enjoy it. Part of why I like 5E is it's simple and intuitive-this isn't. Beyond some of the other mentioned issues, it's just kinda... I don't want to say "clunky", because it's reasonably well worded, but I'm struggling to find a better word. It'd add a lot of complexity for what I feel is little gain.
Apologies if this has already been addressed, but what are you looking to add to 5E with these changes?
Also, have you done any playtesting?