I play on the Kabam servers, where, within the top 100 players, there are quite a few mages. So many so, that for the last 2 weeks almost every single day I have gotten a group that consisted of 3 to 4 Mages. Later levels of the Trial get exceedingly difficult to complete due to the amount of healing going around. I have also gotten a few groups in the past where there consisted of 3+ Knights or 3+ Archers.

To help diversify the groups, wouldn't it be better to have a max of 2 characters of any given class in Trial? This way at there is at least 2 classes presented in a Trial.

1 Knight, 1 Archer, 2 Mages
1 Knight, 1 Mage, 2 Archers
1 Archer, 1 Mage, 2 Knights
2 Archers, 2 Mages
2 Knights, 2 Mages
2 Knights, 2 Archers