Take a good look at when they do challenge. It's always the smallest of the group of foes they are up against or perceived to be the weakest. Picking off the smallest may be sport for some but for me I find it dull. The back and forth of a spirited fight is far more exciting then a Mexican stand off of my foes sitting in their city/rituals and waiting to drag one person at a time back into them.
2 on 2's or 3 on 3's are exciting I'll admit or variations of one number in or out of that but beyond that it just becomes a mess.
Extremely mobile classes such as loremaster and sorcerer have been reduced to glorified invisible binding traps or tower squatters never using their beautiful offensive abilities and relying on portal splash pill times a million. I know if I were forced to spend my entire avalon existence in a forest where I am by far the strongest I would get mighty board mighty quick.
Written by my hand on the 4th of Eleuthral, in the year 1293.