[R@S]

I'll start with what I got so far, the 5 groups and the skills and parameters I think should be available when leveling up.

Trooper
REA, DEX, SHT, GFT, STR

Sniper
EYE, SNP, CAM, AGT, DEX

Sapper
SAP, DEX, HWP, INT, REA

Scout
EYE, HRN, CAM, STH, AGT

Medic
MED, HP, EN, STM, INT

Then we have the cost of those skills

Health = 2
Energy = 2
Eyesight = 2
Hearing = 2
Strength = 1
Stamina = 1
Dexterity = 1
Agility = 1
Reaction = 1
Intelligence = 2
Shooting = 1
Sniping = 1
Gunfighting = 1
HeavyWeapon = 1
Throwing = 1
HandToHand = 1
Camo = 2
Sapper = 2
Medic = 2
Stealth = 2
Leadership = 2
Charm = 2

These are just my thoughts, and what Kyle suggested in the other thread, having the option to buy skills for another class at a higher cost should be included somehow.

When I only give each class 5 skills to choose from in each, I have the GUI in mind. I think there's room for 6 or 7 on each "page" of the dialog screen, and I want to fit that limit. That can be solved by showing the classes on the first page, the player can then choose the class and on the second page we'll have the skills. To put the "penalty" on the cost of skills outside the chosen class would be easy to implement.

What say you?