I prefer (& like it more) to only have 1 statpoint each level-up!
And combat and social skills are in ONE and the same rpg, one big journey full of wonders and adventure, so please don't split the basics of this Gem of a game ... it's a "no go" I darf to say !
A game is for fun, not analysing it to death, not analysing all things until the basic fundation will blow up !
Why do you assume that a game which has dedicated "social" system could be no fun?
Obsidian has already strongly considered to make such a break between combat and interaction systems.
Your argument is absolutely pointless I fear. Because it is "one" RPG there cannot be more than one system running in the background? You're aware that there WILL (probably) be a 2nd stats/skills system with the traits and talents from the 650k goal already?
I already proposed to "give up" the communication skills and reinvent them with the traits and talents system. In this case strenght and other stats could still give small bonuses to things like intimidation but you would still be able to "perform" intimidation attempts with a puny mage who has the respective talent or character trait.
Not to be able/allowed to talk about basic game mechanics in RPG is ridiculous. The core mechanics of a CRPG are systems, systems, systems, indeed, a numbers game.