TBH, none of these are even in my top 10.
- Sword skills
- Massive balance patch
- Actual crafting, not chaos-slamming gambling
- Breach Stash
- Stash for 'keys' (Kinda like poe fragment tab)
- More low-tier currency in campaign
- minimum tier on gear in high-level maps.
- Search function in Atlas...(damn...where was that Iron Citadel again? I accidently clicked the little 'x')
- Better colour differentiation between weapon set passives
- Third ascendency option
I just put waystones and tablets in a 40x40 stash, in neat rows.