- Pilot Skills Tree; as what could be considered skill based bonuses, granted across all mech, so, vague and general stuff.
- Mech Upgrades Tree; Most of what the skill tree is now, as the bonuses that are more like mech customisation or upgrading.
There, pretty simple idea, but also, if not this at all, then consider the idea of renaming the skill tree to the "Mech Upgrade (or Customisation) tree" just for aesthetic reasons, a pilot skill tree could be considered separately entirely.