The arcanist - Master of lower-level spells

So, this is a bit of an odd one I've been working on a while

The Arcanist - Google Docs

Basically, wanted to try and make a caster that specialised in lower level magics while have the potential to hit as hard as those with access to higher level spells. Kinda the grunt of mages?

Anyway, no idea on balancing for this but happy to hear ideas and thoughts - I love the fantasy of the grunt caster, someone who's a master of cantrips and lower-level spells and hopefully some of you do as well!