Suggesting specifically that the stat removal scrolls be adjusted to work on rainbow belts. The value of these belts has gone down a bit with the inclusion of the ankh belt, so this would allow players to regain some value through "building" up old and new belts.

Does the rbelt generation function differ significantly from soulstones btw? On the surface it seems to with min requirements.

Yes it is different to SS.

Max ~12 stat pts per skill up to half the NPC rank.
Min requirements for each stat.
Only skills, not BWIAS or HEM.
Only 1st 39 skills (0-3.
Up to 22 skills, up to the NPC rank. Some skills appear to be able to overwrite previously selected skills.