Actually, I was refurring to that little 2-armed deal on the tip of the nose. I can understand adding beam weapons or the like, on the front of the outer arms, but the way you have the nose thing set up, almost looks like you're planning on making it a multi-part turret facing forwards. If you are doing this, be advised that you can't (yet) make multi-part turrets where the barrel's (coded) default position is anything but either pointing straight up or straight down. In order to ensure that it can point down as well as up, you'd need to give it a 360 degree fof, which has some weird results.
As for the 4-sided-polygon thing, I was refuring to places like the aft dorsal, where there's clearly a square surface. FS will triangularize this when loaing, which will inflate the polycount. There are other 4-sided polygons on the model, but most are not square, being some weird trapezoid shape. These too get triangularized.
For your main arm prongs (that will mount the beam guns), you may want to give them the triangle front as well, see Lucy's arms for reference. Also, I still think that there needs to be something on top of the aft area.
