I'm assuming you are referring to the usual worn spot(s) in the playfield paint from the impact and friction of the ball touching down hundreds of thousand times.

If so, I would guess you might see marginal gains from an attempt to weaken the power of the kick-out solenoid. Still need to kick the ball with enough force to lift it up out of the hole it is sitting in and propel it outward. If the solenoid power is weakened too much, might run the risk of the ball impacting the rim of the hole and accelerating that component of wear.

I would just touch up the wear spot with custom mixed acrylic, maybe spot clear the touched up area, and keep waxed so as to reduce the friction from when the ball slides when it first touches down.

I've seen some people cut and install a small rectangle of Mylar to help protect the wear area. Only need about 1 sq inch or so of Mylar for most cases.

L