My biggest interest about Yenten is why v2.0.1 wallet can't sync block-chain from start, without prepared block data.
DNS seed is disabled and hardcoded seeds are likely outdated or not even yenten nodes but it seems it is not enough to fix this alone. I'd investigate if there is a locking issue. To me it seems like the network thread runs into a deadlock and wont receive any data but i haven't had the time to investigate that yet.
Ironically v1.3.1 wallet still holds the meaning to exist, at this point...
Yes, if there wouldn't have been a 2.0.1 at all it would have turned out better in the end.