JR,
I haven't had any problems commuting out of IND on the Airways side of things. There is a 734 that leaves at 0930 to DCA that usually has plenty of seats on it, and there seems to be plenty of seats to LGA, PHL, DCA, CLT or wherever you'd be going.
Your best bet is an employee parking pass, it'll run you 25/mo being non-based but is a helluva lot cheaper than the alternatives. I got my pass last week, lady you need to talk to is Joan Nissen and her number is 317-487-5298; you will need proof of Indiana residency (they took a CC bill) and an employment verification letter.
PL