Things you wish were in the game

I wish there was a way to trade with someone without actually having to meet them in-game.

For example, there could be a trading box where I place the items I want to trade and specify the player I want to trade with. They could then come by whenever it's convenient for them, add their items, and accept the trade. After that, I could log in later and simply confirm it, and the exchanged items would automatically appear in our inventories.

Sometimes it's difficult to find a time when both players can be online at the same time, especially when they're on opposite sides of the world and have completely different daily schedules.

Diablo IV just got a new SSF (solo self found) play mode that prevents you from trading or partying with other players. D2R needs a feature like this as it would level the playing field for competitive ladder leaderboard play.