Relative short add-on with plenty of intrigue, as long as you have the Hammerhead add-on too.
There is nothing completely new in this DLC, although it is partially an open-world of sorts while you do this mission series. There are certain puzzle challenges here, in addition to the usual blasting of mechs and rebelling Geth. Some parts, though, have you using a Geth cannon on itself, before you can take it out, and enter a Geth ship. Otherwise, there isn't much in the way of upgrades to equipment and all, but there is plenty of credits to be made. The story is pretty intriguing though, adding a sort of extension to Cerebrus' continuing effort to understand the galaxy's enemies, all of which, of course, depends on how you use your version of Commander Shepard. It's not a must-buy IMO, but it's certainly worth a go-around.