A good start to fix loot would be to remove all the useless trash loot entirely.

Namely the weird magic items with minor conditional properties and silly names. It's just trash and doesn't make the game better in any way. D&D items are supposed to feel unique and impactful like in the original games or 5e source material. And the focus should be on the characters, not on grinding new gear with microscopic upgrades.

I agree there needs to be more armor and weapon variety in full release. Some armors are missing entirely in EA and visually there is not enough variety.