That's ineresting!
Did you play this party comps on Path of the Damned though?
I thought about making 2 fronliners, 2 pikemen behind them and 2 squishy backline supports, but your post makes me reconsider this idea. This tactics is created specifically for tanks + squishies compositions, but if I won't have any tanks, then maybe something like 4 fronliners + 2 heavy armored supports will work better.