Here is a suggestion:
Lets increase the difficulty of the Arena. Substantially. DOUBLE IT.
Turn it into a tractor pull, and not the marathon it is today.
I currently can only muster about 110 lvls but it still feels so painfully long, and I would GLADLY die sooner. All I want to do is test my build and my gear (and to a certain extent my ‘skillz’). What difference does it make if I die at lvl 50 instead? so long as its the same for everyone across the board?
These guys who go 300, 400, 500 EVEN 1000 waves? They’re gonna get blood clots man, divorce papers are probably getting filed, pets are not being fed, plants are going unwatered).
I say CRANK THAT SUCKER UP! And if the peasants revolt because they’re running out of keys, then give em more keys!