Who in their right mind wouldn't like lizardmen??
But the shotgun is more than "a bit" overpowered... it does the same thing mine did when I first made the Mars-Pattern. I suggest you significantly lower the weight of the pellets. That will also (considerably) cut down on the recoil.
[edit] I've promised Vulture pix, and here they are.

Okay. I actually got it to fly a little bit better. I also reduced the shotgun's power and made the recon's helmet easier to destroy.
Could someone help me make it fly? I'm not much of a wiz at this stuff, so it's a bit unsteady.

Alright. Here's a quick screenshot of the actors. Can anyone help me improve? They don't look quite right to me for some reason..

They just look too dark in my opinion. If you were to tint them a little bit and add a color or two to the shading they would look marvelous.

EDIT: My change is mostly directed to the very dark spots of black, but adding a color or two to the shading can apply to the entire actor and can only help.

Alright. I've resumed progress. I've been focusing more on the infantry right now. The dropship still flies like it has one thruster.
Here's a few pictures of what I've done. I resprited the E15, I added a sniper variant, the E15M and I added the Pulse Spear, a laser weapon meant for armored foes and heavy infantry that the E15 can't damage.
I also made the actors look several times better with better offsets and more proportion. The second armored vest on the main infantry also works now. It makes sure if the normal vest breaks the soldier is still armored, although not as well.