There's a "MMS1 vs MMS3rd" joint and a skin tone compatibility chart.
The only one that will need updating is the skin tone chart, as new MMS1 figures aren't released anymore. I could include MMS2 figures on the joint chart, but it'd take a massive ammount of research and would require every single MMS kit (except for copy parts, like with repaints), so I won't. The same goes for trying to fit a MMS3rd kit onto a MMS1 body.
If anyone can translate the Japanese text on the joint chart, please do.
The skin tone chart does NOT include the non-Konami exclusives for now, like Dengeki repaints and Wonderfest exclusives, but also stuff that isn't mentioned in the official chart. Unnoficial Shinkis may be added, including CHOCO's heads.
I need your help for this, but please no color blind

Skin tones needed:
Arnval Dengeki
Strarf Dengeki
Howling Dengeki
Maochao Dengeki
Ach Stradale
Yda Stradale
Oorbellen Garnet
Oorbellen Lunaria
Zilveren Sapphire
Zilveren Amethyst
Alastore
Kyknos
Official skin tone chart last updated: Sep/2X/2011 with Arnval+Strarf Mk2 Full Armor Package. (If there's a more recent change, please tell me, but I'll look at the chart every time a new Shinki comes out)