I am still trying to build Nvu based on the Aviary branch, and to be more precise based on the FF1.0 sourceball. Benjamin Smedberg provided crucial assistance, even making a chrome patch to help. If v0.6 can't be based on FF1.0, it'll be for 0.7 but convergence is not a probability, it's a certainty. Thanks a lot Benjamin.

Update: I have first running version of Nvu based on FF1.0 modulo a few big bugs and a few unresolved entities. But it's on its way.