Hey, Josh,
At the time I upgraded from 8x to 9x, I was a novice at this eSword stuff. Not only that, but I had a lot of resources I didn't want to lose. And not only that; there was almost zero help on the previous user site for converting because no one had written anything on it yet. But I forged ahead, and converted. It was relatively easy - and I've never looked back.
From my experience, the only resources that wouldn't convert are either 1) premium resources; or 2) pirated resources. And it's relatively easy to upgrade premium resources. (It makes me wonder about those who gripe about having a ton of resources that won't convert.)
Once 9.5 came out (with docking windows), who would want to go back?!
At www.DoctorDaveT.com, we don't host pre-9x modules at all. I think it is a waste of time to build resources that the creator will not support. I wrote a couple of blogs about the conversion at the former users site; I think I'll go get them, put them up at DDT, and then put a few links here. One is a "how to" and one is a "how come you haven't" (which I wrote with a humorous slant). I think you'll enjoy reading them.
The first one (the "how to") is now up on the front page top position at
www.DoctorDaveT.com. I'll get the "why not?" one up by next weekend.