I'd be interested in participating in such project. As far as style of presentation, I think that all the sites we often use(d) (like lyngsat, sathint, tvrosat, portaleds, etc...) all have pros and cons.
I didn't use sathint all that much, I was usually more confortable with Lyngsat.They all suffer from the same problem, which is that it's difficult to keep things up to date.
One feature that I think is sorely lacking on Lyngsat, and that I think most other sites have, is an update list. On Lyngsat it's ok if a new channel is added: you get the highlight on the satellite list, and then the added info is also highlighted. The problem is with removals - you get the highlight next to a blank line and unless you have a really good memory, you just don't know what was just removed.