What is "non-fun-stuff"?
Simply said, everything, which is quite boring, wasted time and/or endless routine.
Some examples:
1) Team mission; level is clear; entire team runs around to search elevator.
2) Team mission; someone dies, comes back; map is wiped; again the search for elevators starts.
==> is it really so hard, to create a "state of the art"-auto map, with high lighted special zones such as entrance and elevators?
Make a map upgrade or whatever, but do something against that time consuming, stupid search.
3) Boss camping/searching; is that really "funny", to sit somewhere respectively search for hours and hours?
==> no suggestions, how do make it better. As it is now, it is surely the worst way.
4) Missions in generally; someone wants to do a mission for xp and a special item. Mission is far away and requires a long journey. Finally arrived, one encounters two or three mobs and the mission is over.
==> Give us a hint about how large the mission will be, before we accept it
I am sure, that there are many other "non-fun-issues".