I too, wish I could have been in this one earlier. Such is life in fora, though <g>
Now, as someone with way too many MV-22A hours in MS Flight Sim, the low speed flight attitude makes for some interesting dynamics and attitudes. You can't really "wheel" around, helo-style on the bird. (One of my cronies works over a Vertol and says the FS model is "really close") That actually makes a good case for a remotely operated turret or turrets.
The Citation "blend" actually carries that out well.
Now, as a former CAS "customer" I know one of the very real problems working in the littoral is "you use whatcha got." I've often wondered when we'll see an "aramament" kit for the stock Osprey. Not being very fast (CH-53E speeds), that could mean MG's in side window mounts. But, what a person could also do is put a multi-purpose rail (rails) over the mainmounts' side sponsons (surprise, bad guys, sidewinder or the tube-pack stinger; oh, and yes, ground bad guys, those are TOWs or hellfires <G>.
For refueling, I still wonder why they just don't use a system similar to the S-3, with a central probe up and over the cockpit--but I suspect the wing root transmission & pivot assembly is a bit in the way. Which still suggests to me that a 53-style probe might work, instead.
Hmm, what an excellent thought excercise (which helps get over the jealosy of how nicely the model went together . . . )