mkelley,
it is curious how things are happen around Synfig. I've just send a patch to support reading Papagayo voice files into Synfig.
See
this link. the patch has been not so difficult to prepare because Synfig currently has the ability of reading a image sequence from a text file. So just interpreting the Papagayo output file into the internal Synfig format the phonemes sequence is loaded as a image sequence. It is not spectacular but allow lipsync almost.
I agree that lipsync is absolutely needed regardless the style of animation anyone do.
Also soundtrack support is necessary but for the moment the developers (one main for code and a few for packaging) are centred into kill bugs. (I'm pushing them to include new features

)
Regarding to my cat animation and the time I spend on it you certainly should take into consideration two things:
1) I'm not really so skilled in animation.
2) That was the first time I did a four leg walking cycle.
And also, How many time you need to make a four legs walk cycle in Anime Studio
without bones?
I'm a crazy bones fun and bones fully supporter and want to have them into Synfig. Maybe someday I can send a patch to have bones... Who knows.