I'd love to see a blacked out theme with blue highlights, numbers, etc., without any fancy backgrounds on the settings or dialer screens. Something like the Eclipse ROMS with blue, similar to gunthermics/average Joe's apps. Would have to be compatible with hyperdrive.
It has to be different in some ways so as not to Kang their work though..
Verizon Samsung Galaxy Note 3
Acer Iconia A500(V8 Bootloader/ Civato's Re-Flexx Rom)
Too many to mention(but all rooted since the D1)