So after I go through all that hard work (ok it wasn't hard, my brain's just in neutral this weekend! heheh), I find out that P&N doesn't use the SE4 standard PlanetSize.txt! Grar

. Turns out that SJ just doubled the standard cargo size and halved this new capacity for domes. Works for me! So I included both, below.
Alright, here's what I've come up with. On the deduction that the following facts hold true:
- Small Ringworlds are the equivalent of 2.5 Large planets, but since that doesn't quite jive with the full Ringworld, let's call it 50% of a Ringworld.
- Medium Ringworlds are the equivalent of 3.75 Large planets. Say, 75% of a full Ringworld.
- Irradiated planets are just messed up, so I'm going with the exact values Fyron has in FQM-D already
And yes, I did have to guess somewhat because the cargo space didn't always proportionally mesh as neatly as the other figures (notably for the Ringworlds). But based on the above assumptions, here's the PlanetSize.txt I end up with. (Psst Fyron, how hard would it be to add other-sized ringed and machine worlds? Would it throw balance off?)
I'm not sure what the etiquette is for posting files, so I'm just going to link to my own site.
FQM planet types re-proportioned for SE4 Gold 1.84
FQM planet types re-proportioned for P&N latest non-PWB/SE4 Gold 1.84
I'd like to "generalize" the FQM files to make them easier to integrate into say, P&N, but I don't want to clutter up this thread anymore. Where should I continue posting or should I not worry about it as we're up to 52 pages? 
[ May 26, 2003, 22:20: Message edited by: Antra ]