Frankly, as a 4E lover, I'm strongly interested in fewer ability scores, not more.
Your ability bonuses define the things that you tend to be good at. Your aptitudes. For example, a high Strength bonus makes you inherently good at various challenges that need you to be physically strong.
Physical Ability Bonuses
• Strength represents your brute strength, toughness, and size.
• Dexterity represents your precise motion, skillful athleticism, and dodging.
Mental Ability Bonuses
• Intelligence represents your five senses, analysis, and intuition.
• Charisma represents your social skills, empathy, and willpower.