A have a few friends there right now, and a couple more in classes at the moment. I've seen the lines, for the most part (in ORD) they are commutable, 3 or 4 day trips. Overnights are usually 10-16 hours long at Holiday Inn/Hyatt Place or better. The line values range from the low 70's to the high 80's/low 90's. The overnights are decent as well, many AUS, PWM, BZN and Canada.
The DO told my buddy who started class last Monday that the original 12 airplanes for Delta was just the tip of the iceberg. Expect hiring to continue past the stated 180. Also, it was noted that the 4500 tt upgrade minimum is trying to be decreased. The 4500 tt for upgrade and 750 tt for a new-hire is a hard deck minimum due to the insurances, which falls under TSA Holdings. GoJet is trying to get separate insurance to drop those mins. Apparently there s rumor of an LGA base on top of the rumored DTW base. They expect the (senior) STL to grow as a result of the additional flying. There is a class of 35 starting Jan 8th which I believe is full. There are classes schedule in the latter part of January and into February (2 of them) that to my knowledge are stilled unfilled.
All of my friends are happy there. I know of a captain and a captain/check-airmen that commute from Denver and Seattle respectively. They've never been denied boarding on any commuting flight or otherwise. They wear their badges so that people can see who they work for and they've never been given any flack about it.
GoJet is a regional and a stepping stone to a major/national just like the rest. It isn't 2005 anymore, and if you go there, only a bitter fool would hold you accountable for the past.
Good luck, apply and see what happens!