Daily energy
I really don't understand why the energy limit is so low just to play the game. As a level 60 player 130 I'm disappointed by daily energy and any energy rewards. The amount is too low anyway. I understand the energy can NOT be infinite but to pay money to play a little bit more is far away from entertaining! I spend few thousand on shards, books but to spend money just to play the game seems like an exclusive game, just for few players.
At this moment all you can do with 360 energy (120x3 - from daily quest rewards) is to do few runt in dungeons or to grind so champs in campaign. That take like 3 months to fully rise a single champ 1-60, to ascend it and get full masteries.
I can be happy with this:
Level 1 player - 100 energy
Increase amount of energy per player level: 5 (instead of 1)
Max player level: 100 (instead of 60)
That will be like:
Player level 60: 100+(5x60)=100+300=400 energy
Player level 100: 100+(5x100)=100+500=600 energy
With the current system (daily rewards) you can get 1200 energy/day and that can work good to grind champs, to get gear in dungeons etc.
That will work and will motivate players to spend money on shards, books etc!