1. You are WAY early to be planning LL.
2. Jan 3rd is typically a quiet week. So even less reason to worry about your LL's.
For MK, I chose Tiana/P Pan, Buzz/Pooh, and HM. At the time, HM was getting booked up. the reason I chose Pooh and buzz is because I was able to get early LL's.
3. From my experience touring all 4 parks, I had very little ability to move any of my LL's any earlier. Originally, people were talking about being able to use 1, and then move others to earlier times. For the most part, the passes I booked 7 days out were the ones we got. I think I was able to move 1 or two passes at 6 days out. Once we were in the parks, I had almost zero ability to change any of the pre-booked passes to earlier times.
4. During my visit, wait times in Epcot were very short for most of the park. Even though Nemo, L w/Lan, Imagination, etc were just all 0-15minute waits, I still saw considerably less pass availability than I did with G+. Seriously though, LL was a waste in Epcot. You must choose either Rat or FEA, and those were the only rides that had any wait. On the day I was there, I did not see either come up as available though I didn't spend all that much time looking for FEA (and I had a pass for Rat).
4B. It is important to add- in order to USE the Rat LL, we had to go all the way TO the ride during our LL time window. It just wasn't very useful to book LL's in Epcot. We would have done better just to hit Rat when we were over that way or in the evening. You get a little bit of choice when choosing your prebooks, but not much for rides like Rat.
For Tiana, the earliest return available as a prebook was 3:15pm. In January, the ride might be closed. Splash used to be closed every January, because getting wet is not appealing in cold weather. If you are buying LL, probably choose Pan.
5. HS is a mess right now. Even on a slow day, I'd buy LL for HS, but just know any ride you ride without a LL in HS from 10:30am-3pm expect the standby wait to be miserably long. Even fairly early in the morning, no good passes were available to book, and Aliens already had a 30minute wait by 9:30am. Late in the day HS supposedly clears out, but we just hopped.
6. The best park when it comes to LL, as with G+, is MK. That's the only park where you get any real value. I did buy LL for my AK day, but it was somewhat useless there as well. It did save us from waiting for Na'vi, and maybe 10min for EE and Dino, but that was it. Those would have been manageable without it. The main value we got that day was when we hopped. With G+, we could stack 4 evening passes. With G+, we could stack 3.
7. The earlier you book your 1st pass the sooner you can book another pass, but don't expect to see the kind of availability (later) G+ had, though THAT MAY WELL CHANGE come January. Initially G+ was also very limited before modify was added. I anticipate the current system will also evolve over time, just as G+ and FP+ did.
8. One way you can make good use of the new system, is to park hop. As with G+, once you use a pass for HM or any other attraction, you can't get another one for that attraction.
9. I should also add, we skipped Rise, booked an ILL for FoP, and rode 7D standby at night. For Rise, evening waits are fairly short. 7D is a little bit of a gamble, but our wait was about 25. I think posted was 35, but actual wait was shorter.
