Over 1000 hours of ME3MP here. I disagree with all the comments about DAMP not being as in-depth or requiring as much skill as the aforementioned; what's far more likely is that people haven't had enough time to sit with the game and uncover its intricacies. Also recall that ME3MP is as rich as it is because of a year's worth of new content and patches, so the comparison is a bit unfavorable to Inquisition.
The most important features of DAMP right now in my mind are that it's very poorly optimized for latency and includes several design choices/features that need to be held up to scrutiny. The forced-on mic needs to go, the in-game kick vote needs to go unless the person who is kicked can block and/or report the players from the previous match after the fact. This is a basic, and in fact banal feature of online multiplayer games and I'm perplexed at its omission. You simply can't have a game with an in-game kick system and no accountability safeguards in place on the company's side. This is especially the case in a game like DAMP, which plays quite a lot like a MOBA and heavily emphasizes teamwork, because people always turn on each other for perceived failings when things go wrong.
The gameplay itself is fine. The variety of characters is pretty good at ship date, although the number of objective types could really use increasing. More customization options would be nice, although this could be handled in a way that kills two birds with one stone, i.e. more characters could be added into the game.
The skill trees are pretty good, although the four power limit is not. Max level characters have close to the same number of perks as the Inquisitor in SP, yet half the slots--and many PC players have already been complaining about the eight slot limit in SP. Speaking of limits, the two-potion limit is kind of terrible. Let people guzzle away their money if they want, please.
I actually don't mind the store as much as the ME3MP store. Here, you just melt down whatever you don't want and use it to make something else. I'd much rather have it this way than be opening a PSP to find copies 200 and 201 of Cryo Ammo IV. Not "maxing out" a weapon is a red herring, because whether you get a trash weapon you melt down into a component or a consumable that you may or may not use, the outcome is the same: you're getting a random minor item that may or may not be useful to you, but neither of them is what you want.