A design option for anyone if they are designing a pin / retheme, but could possibly be an option for manufacturers to use as well - remove that wear in the shooter lane
Here is a possible solution for the shooter lane in a custom pin, simply route out a pocket out of the playfield and install a 3D printed shooter lane insert. The insert is 1" wide x 6" long x a fraction over 1/4" thick - with a tapering scallop channel to centre the ball. You can 3D print any colour to suit your theme or simply replace to freshen up the shooter lane.
free download from my thingiverse page
http://www.thingiverse.com/thing:608164or
for those wanting to try it out or for those that don't have a 3D printer you can get it through shapeways.
https://www.shapeways.com/model/2979735/pinball-shooter-lane-insert.html?li=aeTabsto reduce the printing everything has a 2mm wall and the design is held down with 4 countersunk screws. If you think anything needs to change let me know and I will make the changes.
A cool mod would be a transparent / translucent shooter lane insert with a rgb strip underneath and have a cool lighting effect when the ball is fired.