I dont know if you gave have seen (press release coming out later today) but in addition to the MCI flying we are also starting:
IAH-SAN
IAH-FLL
IAH-MSY
FLL-MSY
The locals already have such nice things to say about Spirit [see comments]. But as usual, I'm guessing those complaining the loudest have yet to fly us.
Their wallets though have been complaining about fares rising over 20% in MCI over a short while. That is even more important