I'd vote a big fat NO on any merger. But, Mr. Franke probably won't ask for my 2 cents in a billion dollar plus deal like that. Here's some interesting math though:

Mergered today the "new" airline would have 128 airframes. Spirit's orders, plus Frontiers orders scheduled by the end of the decade would bring the fleet to 328, accord to numbers found on APC (I can only confirm F9's orders.)

Both airlines are operating around 13 hrs a day, which equates to 10-ish crews per plane. 328 airplanes = 6,560 pilots plus a 30% reserve staffing = 8,528 pilots to staff a combined airline by 2021. The total list right now would be 2,000 pilots.

Even though a merger could potentially be awful for years, maybe in the long term, it's not the end of the world? Of course, that's all dependent on current orders turning into real deliveries, and FAPA's ability to negotiate F9 off the bottom of a merged list.

But it looks like my crystal ball is still deferred... Hate those darn MEL's. Just one man's opinion...