Alt heads would be great! I originally scoured a bunch of bit makers for awesome heads, but how they go together on the models doesn't make it possible without a lot of GS work.
The minis themselves look pretty sweet...just don't put them next to your old Necromunda ones.. All my Goliath look like little kids in comparison, especially the feet and funky expressions from previous edition. I was really hoping to be able to incorporate the old ones.