The first major issue I see is the end date of Dec 1- Its asking for troubles and LOTs of delay- I'd have it end no later than Nov 10th-ish so even with delays it'll be done before Thanksgiving- After THanksgiving life seems to get hectic and things such as this will be the first thing back burnered and forgotten about- Plus the idea of having the MAIL out X number of swaps in mid Dec with everyone else mailing out christmas stuff would make a LONG and BAD day at the post office...
The other issue is that unless its done as a "small swap" that is there THAT much to do with christmas? Unless you get really specific over details it'll end up as the last holiday swap with 5+ different snow themes and even in Utah they wernt very useable as it NEVER snowed long enough to take pictures...
One other idea to shoot in with the holiday theme is what about doing it an Every holiday thing so instead of just christmas itll be thanksgiving, halloween, easter etc so its more broad but non-disney (personally I like the holiday idea but after the last holiday swap and how most of it wasnt usable to me for one reason or another- I'm not sure Id do that again)
I'd be happy to help ya host it via PM but be advised in T-Minus 14 hours I'll be gone for almost 2 weeks...
As for the ABC Swap- Personally I think you need to nail down the exact rules and specifications needs to be nailed down esp what to do if all the letters dont get chosen etc. For the reg swaps we do the 2 piece thing and if you do more than that you'll need to figure out postage etc because the Flat Rate Envelopes wont work for anything over the 2 piece/24 thing-
Another issue is that you'll still have part of the swap going over summer which Ive decided is a hard time to do swaps because life is so much more unpredictable and its caused both the Cruise Swap and the ride swap to drag on much longer than neccessary-
One last issue is that of the amount of swaps going on- Right now there are 6 swaps that I know of that are active... Plus the Park Swaps will begin in the next month or so
I'll add more thoughts but itll be after work
-em