The Energon Pub

I want to expand the number of autobots in the movie line by customising existing transformers from other lines.
The problem is finding ones that look different or "ugly" enough in robot mode but have an earth car mode.

My current idea is using figures from the robots in disguise line (sideburn, x-brawn and prowl) and making new heads or using heads from beast machines vehicons. I also thought of maybe using cybertron crosswise.

What do you lot think of the idea?