I would actually separate skills to combat and survival.
So each level you get 1 point to bots of them (2 points each lvl). Or it's 1 point per lvl but one goes to combat then next one goes to survival and so on. The main idea here is so players don't need to choice - do they wanna be great fighter of they wanna live in cold tundra. I mean - this king of choice would work If you play big group and even without combat skills you value somehow and within a group also go to instances, raids etc. But right now - it doesn't work this way. If you won't pick certain skills you won't see some of the game content.
Combat skills are like - HP, Stamina, Strength (for mele), Dexterity (for ranged), Int (for firearms and tames fight).
Survival - Fortitude (extreme temperatures and poison resistance), Power (for heavy weight carry), Lungs volume (for longer underwater time), Vits improvement, and some resources gathering related skills also.