I think EVERY melee has a utility buff you need to worry about other than SAM. You DO have a DoT, but it lasts a full minute. You have positionals, but since you basically have three mini rotations, you have more control over which positional you want to deal with, and when. You DO have a fairly busy 2 min and 1 min burst window, but you should be used to that as GNB with Continuation. Between bursts you're doing almost nothing and your only real OCG weaving is avoiding resource capping--you want to save it for burst periods.

Then you have Reaper, which I haven't played really myself but I understand there aren't even positionals to speak of outside of your burst window. I don't know all the details about the spec personally save for everyone saying how laughably easy it is for a melee DPS.