Hmm, armour dlc and silly prices aside, I think both DAI's dlcs have been really good. Not as much companion-related stuff as I'd like, but the same goes for DAO. Hell, the companions weren't even in most of those dlcs. At the moment, DA2 still has the best dlc to me. Partly because Legacy was both exciting and personal for Hawke (and sibling). MotA was also very good: excellent location, fun story, hilarious dialogue.
ME's later dlc tend to be better than DA's, but even then it wasn't until ME3 that they had any decent companion input in the dlc (Leviathan and of course Citadel). Generally speaking, I like the dlc to give me three things: interesting story (preferably where you learn some new stuff about the world), adventure, and companion dialogues.
I thought The Descent was spot-on except for the lack of companion stuff. And the non-existent advisors. That's something that should be changed for the next dlc, especially if we're romancing one of them. I particularly liked that Descent moved back to cutscenes for all the conversations (except for asking the two dwarves for more exposition). It adds a much more personal feel to me. Gets me more involved in the story and characters.