I agree that it's a very difficult commute. I did it for a few years. With Delta the issue is that seat availability fluctuates tremendously. If there's weather going on in another hub, count on people being rerouted through Atlanta. Being hub to hub means tons of misconnects/reroutes. Routinely flights go from wide open to overbooked overnight. I haven't done the commute since late last year, but I was on the jumpseat far more often than in the back. The 777s mentioned above often have open seats, but they go out earlier in the morning and not every day. I've been on the jumpseat on that also as the back filled up. Lots of commuters too, both fNWA and fDAL guys that are on the 777 out of DTW. Jumpseats are typically booked shortly after the window opens. Assuming you're an RJ guy, you won't be able to book them (obviously). I'm a fNWA guy, and there was a period where we didn't have any NWA equipment on the route and we couldn't book jumpseats on DAL metal. I two-legged it many times when that was going on. Airtran is a little better, but they fill up too.
It's not a commute I'd subject myself to without a really good reason.