So, say I wanted to make a half-elf/full elf Archer character that uses Alchemy to make malign poison from the vegetation and animals that surround him, for example. How would the perk spread be lain out? Their descriptions are rather vague, as it's hard to decide what they encompass. Would Archery be decided based on Dexterity or Strength? Would Alchemy be based on Wisdom? 
Also, shouldn't different races have different base perk spreads? For example, elves would have less Strength, but more Wisdom, inherently? Vice-versa for Orcs?
In addition, specialized abilities for different races may do this game some good, but I fear that leads to leaning on tabletop RPG territory. 
Just throwing in some ideas willy-nilly.