I'm happy with your suggestions for the skills. It makes sense.
Dang it, I forgot the Sorcerer skills.
That's why it had 231 total SPs in the
Slaiyith Working Draft instead of 189.
Sorcerer has proficiency in Bluff, Concentration, Craft, Knowledge (arcana), Profession, and Spellcraft.
I think we should max out Concentration and Spellcraft, so that's 6 SPs for each.
How about making the Master's third Knowledge skill arcana to match the sorcerer's only knowledge skill?
That leaves 30 SPs.
Maybe either split that between a 15 rank Craft skill and a 15 rank Profession skill or a 30 rank Craft skill.
Hmm… I think the Craft skill makes more sense.
That'd be…
Aberration 189 SPs (27×7): Concentration 27 SP, Knowledge (arcana plus any two) 27 SP, Listen 27 SP, Spot 27 SP, Spellcraft 27 SP
Sorcerer 42 SPs (6×7): Concentration 6 SP, Craft 30 SP, Spellcraft 6 SP
=>
Master Slaiyith 231 SPs: Concentration 33 SP Con+6, Craft 30 SP Int+5, Knowledge (arcana plus any two) 27 SP Int+5, Listen 27 SP Wis+7, Search Int+5 R+4, Spot 27 SP Wis+7 R+4, Spellcraft 33 SP Int+5
For…
Skills: Concentration +39, Craft (any one) +35, Knowledge (arcana plus any two) +32, Listen +34, Search +9, Spot +38, Spellcraft +38