1. I would want the cord from the pressure pad on the SOPMOD version to be stowed with zipties or just out of the way somewhere. I just tore mine out on some rocks the other day and had to get it replaced.
2. Check out the Magpul Angular Grip, it's a lot more ergonomic than that P-90 front grip in my opinion, and lets you pull the weapon into your shoulder better. I see you've used a lot of other Magpul stuff, they have great equipment.
3. Is the thing in front of the holographic site on the SOPMOD setup a night vision site or zoomed scope?
4. It would be awesome to see some sort of IR and/or visible laser on both the SOPMOD and MOD 0, with pressure pads of course
Sorry if I'm too excited, I love the design. Not trying to sound elitist or whatever...
Oh, and second the comment about it being tough to shoot bullpup with a drum mag. The drum is right where I'd want my shooting arm to be. Elbows in, brother.