I'll see about finding places to post what I have so far. I have enough to start but it's far from complete.
I figure they're somewhat fluid - I may make adjustments once I've played them a few times, but like you said, my aim was exactly to make the ships "feel" right without worrying too much about the specifics of the B5W stats.
The one thing I did do, which it seems neither of the existing conversions have done is to keep the existing "Shields" rule in place but using it to represent armor instead of shields. So I'm assuming a shot that makes it's to-hit roll, and then fails it's PEN roll has connected with it's target but has basically scratched the armor and hasn't done any real structural damage to the target.
The tech levels I think are the most important thing and that was my big turn-off from the conversion that's posted here. Tech levels are a great built-in system that lets you show one race being more advanced than another and it seemed a shame to just throw that capability away.
So, keeping the baseline at 0 let's me have slightly advanced Centauri and more advanced Minbari with ships that are better (cost more points) at the same hull size than the equivalent EA or Narn ships (for instance).
My White Star for instance has a hull size of 9 and costs nearly double the points to field compared with the G'Quan at 15 or the Omega at 16.