I don't think its a bad setup at all, I would consider a MS war better than the rogue, but its all relative.
MS and intimidating shout instead of the rogue ? makes 3 aoe fears.
The fearing makes confusion for other teams which is a good tactic, but IMO I would hold back instead of rushing in (as I understood it?)
Hold back, pick a target, make rogue try to stunlock the healer while u fear away and taking down the target.
Line of sight is perfect for this team as well. Dottin up, jump down (BEM arena pr example) and the target will prolly follow you down. makes it impossible for the healer to heal, or in case he follows, u can take down another target.
Kinda wanna try the same setup now!
dunno if this helps, but yeh-