I raised omni-wizards as an option for our next campaign since elementalists are now nicknamed assassinators in our very small group
And that's from me actually being really restrained in playing mine during the first campaign.
The group decided to just play
RAW and play on.
I'm fielding an illusionist which is not only the in-game opposite in magic school but also appears to be be much weaker in direct combat. We have fun no matter what so I think I'll make a point of playing lesser used spells to see what kind of off the wall stuff can be done.