That's like saying if you have never flown a heavy don't bother applying to Gemini or World. Let's face it PCL, flying a bigger airplane is NOT THAT BIG OF DEAL! You sound like some of those pompouse Delta Captains that are appalled with new hires going to the ER...because it is such a "Big Deal" to fly a 767. Give me a freakin break and get over yourself's. An airplane is an airplane. And hey...they can also do what every other legacy pilot in the world does....WIND CHECK!!!

YGTBSM with your comment. How can you compare flying an RJ to flying a 737 or A320. Not even CLOSE in weight! H3ll, even the CRJ700 only weighted 75,000 lbs.(MTOW) 100K off of an A320. Come On Man...
Personal experience only: I had .4 jet time before going to CHQ, and although I considered myself experienced at handling high-workloads (I had 2k total, 600 multi, and lots of single-pilot night-freight time), I didn't know squat about how to truly fly and manage jet airplanes. My first few captains (and probably some of my later FOs, ha) were definitely CFIs whether or not they wanted to be.
5 years later, as a new E190 pilot, my 3k+ time of 145 time means my Captains don't have to teach me how to fly a jet. I've still had to learn about JB procedures, and energy management in an aircraft literally twice as big as the last one, etc... None of it is rocket science, but I look back at my 2000-hour all piston-experience self, and see that I would be a far bigger burden on the other guy in the cockpit. The general expectation at this level of aviation is that the other guy in the cockpit is supposed to be an asset.
Overall the guy with 2500 hours of 402 and CFI time isn't going to be the same asset in a 114k jet, and isn't likely to have the ability to walk out the door to UPS, DL, Airtran, or anywhere else if he/she doesn't like the deal here. That's how many of us see this. As far as we can tell, there are plenty of RJ captains and military pilots still applying here, but management would love to have some newbies that are a little more, uh, captive.
Grimper: I totally agree about the judgement part, but still think there's relative experience these guys are missing that would be beneficial in a larger jet. By the way, JB is in danger of CURRENTLY being a stepping-stone job. (Disclaimer.. I like the company and really want things to work out here). If I decide that compensation improvements or other conditions are not worth my time at JB, I've got far more ability to take my type-rating, turbine PIC time, etc. somewhere else than a kid with only an SIC type and NO turbine PIC. This is what many of us are afraid is really the motive behind this program.
PS Jetblue does a short refresher course on high-altitude and jet aerodynamics that is far more info than Chautauqua was teaching when I left... scary, huh?