As long as i get to be the frog
The premise of the thread is: in D&D 5E there is a caster / non-caster gap and casters dominate non-casters.
So the question is: what specifically can D&D 5E do to fix this problem?
The two obvious broad solutions are varying degrees of nerf the casters and buff the non-casters.
Cool. But how?
1. Rework all the stupidly overpowered spells for their spell level. (Especially the lower level ones like shield, absorb elements, silvery barbs).
2. Martial defenses (AC and all saves) need to scale with class level. (I'm thinking +1 at each level cantrips scale). This prevents casters from being as good with armor as martials.
3. The skill system needs completely reworked. There's only a handful of skills that matter from level 1-20.
3. Martials in general need their level 11+ abilities completely reworked - they get far to little at those levels.