http://forum.square-enix.com/ffxiv/t...=1#post3604567

I think I figured out the new curve. Maybe it was already figured out a long time ago, but oh well. At least there's data to look at to back it up!
0-30% (-20 rlvl) = +2% Success per Level Increase
30-50% (-20-0 rlvl) = +1% Success per Level Increase
50-70% (+0-10 rlvl) = +2% Success per Level Increase
70-100% (+10 rlvl) = +1.5% Success per Level Increase
So that's that. It's done. There's now basically no point to me continuing to record my GSM progress, but I might as well go all the way to the end because I'm close to 220 now anyway.