If ExpressJet is going to start a stand-alone scheduled operation in a couple months, where is the marketing campaign? Airlines don't just start flying new routes, particularly under a brand that's unknown to the public, without trying to create a buzz in the affected markets months in advance.
Also, what is the paint scheme going to be? What Reservations System are they going to use (I'm sure continental is not going to let XJet use theirs)? Have they discussed where the new reservations office is going to be? Have they even announced a director of reservations?
There are a LOT of steps that have to be taken by airlines well, well, in advance of launching service in order to make something like this happen, and I'm not aware of XJet having taken any of them.
And even if they do announce all that stuff soon, and go ahead with the launch of this stand alone operation, I would be very nervous if I was on the bottom of that seniority list. XJet might have an advantage over flyi in the form of a revenue stream from its COEx operation, but that does not assure any kind of profit from the independent operation, it only assures that the company is not going to go out of business. No matter how nice the CEO might be, the shareholders, and the board of directors, are not going to allow him to indefinitely continue to operate an independent division if it's loosing money even half as fast as flyi did.
In the long term, I don't think an independent operation using 145XRs is going to be viable, and those planes will eventually end up being removed from the fleet, along with the employees hired to operate them. I hope XJet is doing this as a stopgap to buy themselves more time to place the planes with another major carrier, and that they are successful in finding another carrier, because if not I'm afraid a lot of people are going to end up on the street.