Quoted from crlush:
The playfield looks pretty bad ass all put together, if it's fun to play I dont care if the cabinet was only painted black. Yea it could be cool with a bunch of character artwork but do you want to wait another year to get fox's approval on that.
I also seem to remember hearing that Fox specifically wanted the alien/egg backglass and theme to fit into their broader alien branding. Could be wrong on that though