Trust me, given the dismal conditions of being on reserve flying 11 hrs a month and commuting to JFK from DFW the last thing I'd want to do is get rehired here upon resigning. On the other hand, several other regionals were trying to poach my classmates during training so I'm sure resigning with less than a year would not impact hiring at another regional. I guess I'm not seeing your thesis- resigning and getting hired again by your current employer?