Good points. I know of a couple of guys that just got hired that were flying old Lears for Ameriflight and also knew guys that worked there.
Keep your chin up. You've got great experience thusfar and you will be valuable to someone soon I am sure. Seriously, both AirTran and Spirit are hiring (look at the recent post) and their automated aircraft will be simple for you to fly after getting experience on the E170. Make sure that you do a lot of networking with pilots from the various carriers if you haven't already.