be careful with buying this DLC! Just because you own it doesn't mean you can use it. More often than not you're fighting against this thing rather than being the one using the dreadnought. For $10 i'd expect a hell of a lot more than playing as a dreadnought 5% of the time.
They purposely don't tell you that there can only be one dreadnought on a time and the only way you can choose it is for you to kill the current one! Useful for balance purposes but for $10(or even 3.50) i'd expect to be able to play as one when I choose to :( cause in reality you're paying to be killed by one