I fail to see how "I like your drawings" is considered feedback.

Aura would really be a bad idea because "aura" type stuff is what causes the most leg in the game. SMN avatars, Confluexes, Teleport crystals, etc.

The main problem I see with labels is that its not something currently in the game so its not as simple as "just turn this on to make it visible", it would be something totally new for the game and could cause the same kind of lag.