Hi Deej
Just a few short suggestions off the top of my head.
1.More vault space (major priority especially with HoW coming Q2
2. Ability to reroll legendary vendor wepons (just like in iron banner) maybe use marks and commendations instead of motes
3. Custom strikes- build your own strike with your friends, you could choose the strike, enemy level, what burn/moddifier you would like.
Thanks for reading.