I am sure there are a few. If you want to commute on DL to the FDAL bases, I wouldn't want to be based in CVG, since there are mostly RJs down there. I don't think there are a lot of flights between ORD and JFK, but LGA probably has them on the hour or more. SLC to ORD probably isn't a bad commute, with DL and UA flying a mix of RJs and mainline equipment. I would think ATL would probably be the best choice. There are a lot of DL MD88s and 738s flying the route, and even 2 MD90s currently flying to ATL from MDW. Throw in a few RJs, and that probably would be the most logical choice. Now that is all for the FDAL side, if you want the shortest commute to the largest bases, bid MSP or DTW, with MEM a distant third due to lack of flights total.
I would say DTW. At times I commute out of MKE to ATL. It is a nightmare. ORD is not bad but it fills up to ATL.
I had a bud that did the NYC thing and gave up and moved to NYC, so you can guess how good that was. (DCI out of MDW to LGA)