There are people out there that want this. They are limited. I’m no online gamer but some like that and it will be easier.I'm going to- hoping to see what I'm missing first (notably, issues involving half casters and specifically Paladins ... that's what I'm seeing).
I'd like to the rule to be simple and easy to implement - I liked the way @NotAYakk was thinking, but I prefer simplified rules, and that proposal was a little too finicky.
But I wish people would take me seriously when I tell them that hellboy for d&d 5E pretty much does this already. If you could use their magic system you would be very very pleased. At least I think so. A