It's annoying since these "harder alliance raids" can honestly be even shorter then some of the dungeons I've run.
I had a Dun Scaith run recently that only took around 22 minutes. Everyone was on point, little to no deaths, and extremely high optimization. Felt so much fun working with other people to see how quickly we can get through it.
I'd agree with at least increasing the exp earned on Dun Scaith and Orbonne as they do take longer then the other ones on a general basis. The amount of times people wipe on TG Cid due to one alliance not handling really simple mechanics is baffling.