Just about anything is possible with a 3D printer if you have the time and motivation. I get asked about this sort of thing quite a bit, specifically my Battletech designs, and I do sometimes consider it. However, I would rather spend the time modeling my own original designs that I own outright so I can sell the printed minis and toys if I want. I have released a few for sale if you are curious. One of them is sort of like a cross between an MW4 Flea and Hellhound. The other is a bot that changes into a tank. You can see them here ---> mechazone.storenvy.com/
The Omega mech is a wonderful piece of machinery, albeit slow and very difficult to maneuver. In a defensive situation, this thing could probably hold its own on a flank long enough for some sort of support to show up and give it back up to push back the enemies. Its loadout is somewhat under glorious, but for what it does, it does good. Me and a group of friends still continue to play Battletech, and we test ran a Omega with a bit of a different loadout, and if it wasn't for its movement speed, that thing could slaughter a lance easily on its own. (talking medium - heavy range). And most likely take on a pair if not three assaults. This thing is a beast. That is all there is to say about it.