I rather like the idea of not using anything higher than uncommon (green border) magic items.
I thought this was an interesting idea so I gave it a try. In the process I searched online and found several discussions about appropriate levels of magic items for 5E
Several suggested the following mix
1 common consumable for every level from 1-5
1 uncommon consumable every level from 6-10
1 rare consumable from 11-15
1 uncommon permanent item at level 4 and a 2nd at level 7
1 rare permanent at level 10 and another at 13
So I have a campaign following this format on tactician and it is easily manageable but certainly adds a lot of interesting choices.
I don’t spam short or long term tests so generally 2-3 significant combats per long rest.
What’s interesting is making the choices of what to have equipped especially from 1-3 when all I allow myself are common consumables (items with no borders, health potions grease etc) I added an additional restriction of no more than 1 type of consumable per character (ie 1 health potion 1 grease 1 alchemist fire)
I am currently at level 7 so my characters have all just received their 2nd uncommon permanent item (green border) and can now carry 2 uncommon consumables (green border)
Not using haste potions (uncommon consumable) until level 5 makes for some interesting fights early on.
It’s been fun to pick items (and I don’t allow myself to switch out) and I have found I use spells and tactics I never had to before. The old grease potion and spell are very useful in the early levels.
Well into Act 2 and it’s all very manageable and has been a lot of fun as a change of pace.