As an avid Mercs player, I see a couple of problems with the list.
First, Ashlynn syncs up really well with the Mule, but the Freebooters aren't really up there - While the grabbing attacks and such are cool, there's no need for two of them. Replace one with a Vanguard or some such, she loves those little guys.
Right now, the Devil Dogs and the Precurser Knights are redundant - The Dogs with the trio of heavy jacks and the Knights with Vershe. Unless you plan on expanding into Constance Blaize, in which you want as many Morrowan units as you can get ahold of. Basically, the Dogs are SPECIFICALLY anti-jack models, they can only knock down 'jacks with their picks and they get the bonus die on knocked down models, stick them with the Freebooter and you can have some fun throwing around the big and scary things in their list but with all those big robots? They'll spend a bit too much of the game not being efficient, unfortunately. And Vershe and the Precursors (I haven't used the latter personally, though) are good anti-buff units, with Vershe better at dealing with infantry and the Precursors for slightly larger targets, but they're both anti-buff units and even at 35 points you'll be hard pressed to use both of them efficiently.
My recommendation is to replace the second freebooter with something a bit more utility, perhaps another Mule for the artillery or a Vanguard to save some points and add a touch of rearguard defense. If you're looking for a splash of Cygnar, Gun Mages are always a slick choice, i'd have them replace the Precursors. If you're going to have the Devil Dogs 'jack marshaling something then they're probably fine, but I find them a bit expensive to take on their own merit. Consider marshalling the 'mule to them, as letting the mule move and shoot at it's full distance while still taking advantage of Ashlynn's feat can be brutal. Otherwise, Steelheads are always a good choice if you're just looking for more bodies in the field. Finally, take a look at some solos like Gorman di Wulfe or Eiryss (if you really want your friends to hate you, that is), as Merc Solos is a great reason to run Mercs period. Reinholdt is a solid one point as well.
In summary: Freebooter's aren't great enough to need the redundancy of two, Precursor Knights are fine but them and Versh is a little much and Gun Mages are a more solid choice, and the Devil Dogs need to have a reason to be there 'cuz they're expensive. Of course, this all hinges on you not yet owning these particular models yet.