I try not to post on these boards but I feel bad for some of the new guys hoping for a solid future at Spirit. Things will never be great at Spirit for the following reasons.
1. Union representation has often worked in their best interest, often cooperating with management and not the pilots they represent. Must I say this is not all, but there is a strong track record.
2. Pilot intimidation by Spirit Management specifically lead by your current director of operations is well documented. Although this is a tactic used by a lot of airlines at one point or another Spirit finds a way to take this to a new level. This is evident by the enormous number of notice of investigations issued by management. The union has made several statements regarding this intimidation, just read some of your mec emails. You can also read some of the more hidden intimidation messages in your chief pilots, now DO weekly letters. The frequency of these investigations by percentage is higher then most major airlines with more then 10 times the number of pilots. I cannot begin to state all the good pilots who have been threatened by this sort of intimidation, often for doing the right thing.
3. The weakness in the pilot group itself. Spirit has some senior pilots who have often bragged to me about the huge salary they were making by picking up loads of open time. Mind you some of these individuals often felt the need to brag about their earnings while simultaneously demonstrating how incompetent some of them were flying the aircraft. Generally, there were reasons why these sub 2000 hires never could get hired at a major, yes they are dangerous. Now, don't confuse these guys with some of the really good guys, notably the a couple ex eastern guys, and a couple of senior check airman. These guys will never support the rest of the pilot group. I think some of you have all flown with your hotel ALPA guy, (I think his name starts with H if its still him) and been scared somehow. This chump once told me " I would do anything to save my job, pay cut, I don't care about the junior guy".

Now, there are a lot of good pilots/people at spirt as well, but with the corporate culture at Spirit you are fighting a losing battle. What I suggest is keep quiet, build your experience and wait for a new opportunity to arise. Now in this economy this might take some time, but it will come. Just don't live in the utopia that spirit will one day be a great place to work, it won't. Not unless there is a complete flush of management and enough expansion to wipe out the effects of all the bad seeds. I do applaud you for caring and trying to make a difference. I hope that you are successful, but you must also carefully analyze the reality that is Spirit!