I've still not bought Yareal yet. i'm not interested in him being a Jedi i just like to have all the different alien species. Obviously having a figure with the most accurate detail is best.
a bendy neck could be achieved simply with a wire inside a rubber neck. only problem with that is they have to put holes along the length of one side to allow the rubber to move and cure properly etc.. just look at the nexu's tail and the dianoga tentacle for evidence.
I guess they could make the base of the neck a ball joint but that has the problem of giving the sculpt a certain amount of ugliness usually. and in the case of Yarael it'd have to be a faily big ball joint because of the tapering nature of his neck.