I think it would be nice, if it were possible to give the level designers feedback on their levels in the level portal. I've played levels and found sometimes bugs or issues. Reporting these would raise awareness, where the players are stuck or have problems/issues and the level designer could improve the level according to the found aspects. I think this could increase the average level quality.

Common problems, I found in some levels:
- In a non-linear level it is at some point not clear, where to go next.
- To few Respawn Points.
- It is possible to skip huge parts of the level, which is surely not intended.
- An enemy has to many health points and beating him is not challenging, but time consuming.