D&D 5E Balancing Full Casters with Non-Casters

[Tony Vargas]

My game group normally will not get past 10th level in a campaign, but now that we are staring down that reality my group is complaining that full casters (Wizard, Cleric, Druid) are going to warp the game. I can't say that I disagree, I have always felt like the D&D classes were playing in two different games; medieval combat movie and magic-users warp reality. Fourth edition was the only times things felt balanced,

And 'didn't really feel like D&D' for that very reason, sure.

My question is, how would you propose to either reign in full casters or buff up non-casters to make things feel more balanced in 5e?

It would be a huge undertaking, and, on some level, pointless. All 5e classes cast at least a little, it's a caster-centric game. Balance is a nice idea, in theory, but D&D hasn't generally been a good place to start if you want to work towards it, in practice.

A simple solution is to just toss the under-performing classes. If a class isn't up to your standards, you don't play it. A party of full casters - and perhaps a paladin if someone just must feel like a warrior (and Valor Bard, War Cleric, or Bladesinger just isn't warrior-y enough) - should experience fair intra-party & class balance.