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"Is it jealousy? I don't know."
Hardly jealousy...
Am I not intitled to my opinion without being considered jealous?  I based it on my dislike for 300 hour jet F/O's, my belief that all your time spent working your way up makes you a better overall pilot, and my feeling that MAPD helps keep the pilot group at Mesa down.  
Wheelsup....I'm not surprised that you, as a CFI workin' his way up, would think the grass is greener at MAPD.  I just see it from another angle.... 
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MAPD definitely works.  After about 3 to 4 months online, you are as good, better, or worse than the flight instructor at handling different situations and flying the plane (IMO), it just depends on whether you are a natural pilot or not.
I think UPS727 is correct in saying that if Mesa furloughs, you are screwed.  I would reccomend going to ATP and instruct, and get on somewhere else.  The time it takes (all-in) is about the same (2 years).
I think he is wrong in saying that MAPD students bring down the rest of the Mesa pilot group.  In my ground school, there were around 8 MAPD students to around 42 non-mapd.  To say that some kind of whipsaw can occur w/ the small # of mapd'rs is ridiculous.  
The reason Mesa pilots are in the position they are in is due to the majority of the pilots having only been w/ Mesa for under 4 years (when the TA was signed, it was lower than 4 years).  Once the tenure goes up, there will be some major changes (which is starting to happen right now).
It is not MAPD'rs bringing down the house.