I'm not having any luck with party members at all. i don't know if it's an early game balance issue or i'm doing something wrong but having 2 party members and trying to equip them best i can (which isn't well this early in game) they seem to flee so quickly, even when i've only explored like 5-10% of area they already start fleeing, usually they still have 90%+ health so i don't know why their moral is dropping so quickly and i been avoiding traps as much as possible. I try really hard to get to next warpgate somewhere in that area but twice now I've had not only both my party members fleeing throughout most of area but twice now i've had my party members also go insane. I'm guessing more you use them/take damage/low moral their insanity goes up, before i can even clear one level of a dungeon or one area and get to a gate to go back to down and switch out party members to let old ones take a break they go insane and i lose them.
I suppose i could just send them back to down like i was doing before but it seems odd that they start having moral issues so early in an area/dungeon level and i have to send them back to town so early, this leads to me clearing out most levels/areas almost entirely by myself because they are so unreliable.
Anyway this is just my first hand experience with party members, i could be doing something wrong, this problem may not be a big deal later in game, i really don't know, but first 5 hours of gameplay and during my first "game" party members have been almost completely useless to me.