Wizard C3 is a building block for future classes.
At the point where you just have Wiz+Ele, Pyro/Linker or Cryo/Linker and Ele would probably be better than Wizard, just because you have to wait on cooldowns for Ele spells while being a wizard, while you could have been using Pyro/Cryo+linker spells.
However, with that being said, Wiz3 will become more effective when you pick up another class aside Ele and add more diversity to your spells, than having Pyro/Cryo which will end up being just spells you never use anymore.
Yes you will have to level through your Teeth a bit with Wiz3 through the wiz+ele period but it SHOULD get theoretically better when you pick up another class after elementalist.
Also WIZ3>Ele>linker is also a possbility, which would further increase your dps capability.
You do have to realizey that Pyro and Cyro fall off eventually and you’ll end up with classes that you don’t use anymore.
https://www.youtube.com/watch?v=Gn_O-YeD-Ro This is a video i found on youtube with Cyro 3 and Pyro 2 without elementalist, which shows how many spells you have to burn through to kill a few monsters, however these mosnters seem to have quite a bit of HP and i’m not sure whenther they are normal or elite dungeon monsters.
But either way, the way scaling works in this game, early class spells tend to fall off later because there is no % scaling on most spells.