If you want a stress heal, reorganize the party like above and exchange the BH for a Houndmaster (or Jester if you want your Occultist to mostly stun). No good way of incorporating him IMO without totally reworking your backline as he wants to be paired in the midranks with a dancer so he can spam Holy Lance rather than resort to Smite.
However you may find it more useful to replace the frontliner with a Hellion for improved damage depending on the region-frontline MaA is a go-to for the Weald past Apprentice but isn't as important in the other regions.Ĭrusader is better-suited for a different type of party than this.
With these heroes you already have Arb for an off-healer and would find MaA to be a better stunner, so the only real benefit of Crusader is a stress heal and extra damage to frontliners (generally not helpful). Moving the Occultist up to 2 and taking the MaA would make for a strong party as that gives you 3 stuns plus a guard and decent damage. MaA is the only hero who is of any use as a tank, a decent (if low-range) stunner, and a buffer. Crusader is a stress healer/off-healer that can do some (mediocre) stunning and, if the party allows him to dance (this one doesn't), deal damage.