I'm definitely interested to see what the motorola/google marriage produces... I am convinced they have some secret stuff going down... Majel? X-phone? Whatever it is, if it isn't as straight AOSP as a nexus, it will probably be pretty developer friendly with Roms galore.
I'm "stuck" on VZW with unlimited data too... and I just can't give that up. If my Gnex bites the bullet, I will just buy an old used LTE phone that has good roms out...