Yeah, I seen people run like 2 to 3 casters and just nuke the enemies before they even get close.
For me I like to never rest so the heal spamming on pets is for me more preferred, than managing spells.
The real game is POTD so I look at most classes as utility and what they can provide. Ranger real strength is damage + pet.
Paladin is great main character becouse the disposition gives early high defence and the modules auras are super strong.
I also have the paladin order that has two endurance heals one from killing and the other from flame of retribution.
Chanters damage chants are amazing if you have 23 strength and they stack so I get like 50 damage over 3 seconds.
Even when surrounded my party just outheals all damage and slowly whittle down the enemy.
My main problem is aoe and stuns but the priest can offset some of that.