Litang - dead end if I want to go up to Dege?

I posted this before in the China-forum, but maybe here the chance, that knowing people read it is bigger.

Hi,
since I've read so much about Litang I have the impression, I should not miss this place. During my next trip there are some places I really want to see (maybe it's just stupid, but usually I have some places I want to see and the rest happens by accident): Danba, Tagong, Dege, Pelyul, Yaqing, Sertar.

So my plan is, first to go by bus from Chengdu to Kangding. From Kangding there are direct buses up till to Ganzi. From Ganzi I want to do the loop Ganzi-short stop in Yaqing-Pelyul-Dege-Manigango-Ganzi (I want to do it this way, because LP states, that there are no buses in the direction Pelyul-Ganzi). Then I also want to do a visit to Sertar (Larung Gar) and than go back to Ganzi.

From Ganzi there is a road via Xinlong down to Litang. The latest LP states, that until the book was written, there was no public transport down from Ganzi via Xinlong to Litang.
F i r s t q u e s t i o n: Did this change already?

Right now it seems, that if I want to see Litang on the way back that I have to go back til Kangding and then go to Litang and the same way back. Afterwards I want to explore the area around Tagong and Danba before going back to Chengdu.

S e c o n d q u e s t i o n: If I have enough time and the route from Ganzi via Xinlong to Litang is not possible I think about continuing after Sertar via Aba and Hongyuan til Jiuzhaigou or from Ganzi via Ma'erkang and Hongyuan to Jiuzhaigou. Is there a public transport at least for one of these routes? If there is and if my first questions answer is a "no" I think I will skip Litang and include Jiuzhaigou and go down from Jiouzhaigou to Danba and Tagong.

T h i r d q u e s t i o n: If there is no public transport how are the chances to find a simlar private kind of "mass transport", like private minibuses I could share with others? Renting a minibus for RMB 450 on my own is no option for me.

Hope this was not to much, but I tried to structure my questions. Thanks for answers, I know, that not many people travel there.