I applied (as a fuc*ing hailmary).
Wow, first I'm hearing about it (just saw it over at TLS too). Even if I could get all my materials in by the 15th, I wouldn't apply Early Decision. What's the point? Since they might rescind if I get "inconsistent" (what the hell does that mean?) 2nd semester grades, I don't want to be out of luck for other EA programs or withdraw my GULC application. If it was non-binding + seat deposit like GULC, I'd do it. Great school though, and I'm planning on applying regular decision.
I'm not sure what it is you want to do. However, U of C is an incredible school and is ranked quite a bit higher than GULC. Perhaps if you live in DC or want to go into politics GULC might be more attractive. But U of C will open more doors for biglaw, academia, and prestigious clerkships. Finally, I would guess the GULC may rescind an offer if your 2nd semester grades are poor, too. Considering how much you post, it seems like you take your education pretty seriously so I doubt that will happen anyways.