I too would like to see something similar.
In my last playthrough, I picked a Necromancer-Battlemage, skilled on Pyro and a bit Aero. Originally, I wanted to make a 'Death Knight', alas, all physical Weapons scale with either str or dex, while the Necromancy skills scale with Int. I didn't want to create a hybrid, which kind of forced me to pick the 'common' Battlemage skills Pyro and Aero.

Even then, I encountered the problem, that the best Staffs had incompatible elemental damage (in my case Water), restricting my damage potential.