mamba
Legend
you can do whatever you want, there is not just one possible solution here. As far as I am concerned, level 5 is a much too early cut off point, in that case why even bother.That's the point, though. We keep having the 'how do we fix the gap' and the two ways to fix it being either nerf magic casters (which makes the magic crew upset) or make the fighter supernatural, which makes the folks who want it to be purely mundane upset. So we meet it both ways by going "Cool. This is the level where mundanity stops"
If you want to go all out crazy at level 16 and manage to spare me that insanity until then, we can coexist. But not if the switch happens at level 5.