I would re-write it:
Swashbuckler
Requirements: DEX 15 or higher, any Fencing Combat Style at 90% or higher, Acrobatics at 75% or higher
Hero Points: 12
Duration: Continuous
All Acrobatics checks have their difficulty grade reduced by one, i.e. Difficult (-20%) becomes Routine (0), Routine becomes Simple (+20%) and so on. When armed with a light melee weapon you may recalculate your damage modifier using DEX+INT.
Which is a nice simple way of achieving the desired result without adding a lot of complexity.
**Edit** or better yet, "Acrobatics checks to perform feats of daring, swinging from chandeliers or rigging, performing stunts in conjunction with the Outmanoeuvre action and so on, receive a +20% bonus."
Swashbuckler
Requirements: DEX 15 or higher, any Fencing Combat Style at 90% or higher, Acrobatics at 75% or higher
Hero Points: 12
Duration: Continuous
All Acrobatics checks have their difficulty grade reduced by one, i.e. Difficult (-20%) becomes Routine (0), Routine becomes Simple (+20%) and so on. When armed with a light melee weapon you may recalculate your damage modifier using DEX+INT.
Which is a nice simple way of achieving the desired result without adding a lot of complexity.
**Edit** or better yet, "Acrobatics checks to perform feats of daring, swinging from chandeliers or rigging, performing stunts in conjunction with the Outmanoeuvre action and so on, receive a +20% bonus."