Hi. I have no 3D software, no access to a 3d printer, and little to no experience. I however have some good ideas. It's a well known fact that Bruticus' footplates are off-kilter, as well as Vortex' hand and connector. By folding up Swindle's legs and turning him backwards, and adding pieces that connect his and Brawl's footplates flush with their knees and centered, as well as a new connector clip for Onslaught's shoulder and a piece to hold Vortex's fist centered, well, you get a better Bruticus. I have a mock-up proof of concept I made with sticky tack, and I'll add pics once it's day and I have better lighting.

I also think a clip to keep TR Twinferno's legs stable while his torso is straightened out would be pretty nifty, especially a metal one that would help him stay balanced.