Many Fate flavors are "everyone has the same number of skills, and the same number of each level..."
The use of the Pyramid ...
+5 ×1, +4 ×2, +3 ×3, +2 ×4, +1 ×5...
"advancement" in many of these is simply swap a skill at +X with a skill at +(X+1)
EG freido has Sword +3 and Blaster +2, and hits a milestone, so deciding he needs more blaster, he swaps them and now is Sword +2 and Blaster +3. He also later swaps his +1 pilot (and awarness 0) for Awareness +1 and Pilot 0.
It's not the same kind of balance, but it's a tyrannical one - not all skills are equally valuable in play, but are equal in Allowed Skill Levels. Picking wisely can be a big issue.