If heat is the issue, then embargo them from May to September/October. If becoming a successful LCC was all about copying another practitioner, everybody would do it, and they'd all be successful. Not that easy. Just ask Independence Air. I'd like to be a fly on the wall, when those guys in Tempe actually figure out what they bought. By the way, many of the carriers you mentioned have a whole different outlook on checked baggage. Most don't even interline. I believe AWA does.