For more than a year now my team looks like Boxing Majors beating 3 year old kids in kindergarten everywhere.
The Temple system is the only saving grace. PvP is not a thing right now also.
This was somewhat challenging and perfectly fine for basic mode, but still not enough to feel any hardships.
We need Elite modes for everything which are not supposed to be killed with anything but specific combos etc.
It's a great incentive to people to get some specific heroes on track also.
Shouldn't be crucial for economy also (i.e. not give anything valuable on daily basis like resources), but should provide some unique skin or something so people would want ot have 5 those heroes equipped to get it.