We own at BWV, and have stayed at each
DVC resort at least once (including AKV and BLT). Overall, BCV is probably my favorite, but AKV is a close second. BWV is in the upper middle of the pack, but BLT is near the bottom.
Personally, I think you made the better choice with AKV. Other than it's proximity to the MK and the monorail (which admittedly is a big plus), I find nothing about BLT that is superior to the other DVC resorts. The rooms are small, the themeing is bland, and furnishings are cheap (hopefully they will fix this). The pool is OK, but nothing special. Parking is convenient, but you have to check in at the Contemporary and use the bell services there, and there aren't any trolley's you can use at BLT, so the close parking is kind of useless. The views are great.....if you get the right rooms. I have heard more complaints about disparity in BLT views than any other resort I can recall. Don't get me wrong, it is a nice resort and we enjoyed our stay, but in comparison to the other DVC, I don't see it justifying the high buy-in cost or the high point requirements.
On the flip side, AKV is just a feast for the senses, especially Jambo house. The lobby and overall themeing is so impressive, I just feel like I am in a different world when I am there. The pools and restaurants are awesome, and although it gets a little ho-hum after a long stay, having the animals outside the hotel is just so cool. The rooms may be a little dark, but it fits the theme and the quality of the furnishing seems high. The points required for the best view (savannah) are on par with the other DVC resorts, and not crazy high like the BLT rooms (particularly MK view). Also, the points required for the lesser views (standard and value), are real bargains.
Finally, regarding the busses, they may not be as good now that Kidani and Jambo share the same busses, but I have never found there to be an issue.
Yes AKV seems the furthest away from most parks, but it has little effect on the travel time vs. the other resorts. Comparing AKV vs BLT:
AKV to:
MK = 8 miles
EPCOT = 5.5 miles
HS = 4 miles
AK = 1 mile
BLT to:
MK = adjacent (although the walk or monorail ride door to door is at least 10 minutes)
EPCOT = 5 miles (via monorail, but with a transfer at the TTC)
HS = 6 miles
AK = 8 miles
As for the other resorts, VWL is similar to the BLT distances. BWV and BCV, while obviously convenient to HS and EPCOT by boat, are about 6 miles from the AK and have to contend with a bunch of resort stops and stoplights along Buena Vista Drive. OKW and SSR have multiple stops within the resorts themselves, and also have to deal with a bunch of stop signs and lights.
Overall, I would contend that the average time to get to the various parks from AKV is not any worse than any other resort, and that the feeling that it is so far away is just perception. Personally, that perception that it is far away (but actually so close) is one of the things I like and find so relaxing and refreshing about AKV.