I'm launching a comeback as well. I've been out of the Part 135 and CFI world since 2002. Practiced law for twenty three years and hated every minute of it. Now that my last kid is off to college in the fall, I'm free to pursue my passion. Since 2002 I've got a buttload of time in gliders and dragging them with a Pawnee. I had a full IPC last year. Got a 1st class medical.
I applied to several regionals through AirlineApps, everyone of them called me for an interview. I interviewed with XJT, did lousy on the sim, and was not offered a job. That's OK. I didn't really want to work there anyway. Piedmont called me for an interview, but I didn't go since there's no way I can make their odd domiciles fit my lifestyle. I have another interview scheduled for next week.
Go for it, old man!