Below is a picture of the original ball deflector that went over the ramp transition.  I always thought it was an eyesore, and the ironic thing was that balls could still get stuck on top of it!

Shown below is the small, replacement deflector I made out of polycarbonate after ball-trap testing.
A bit hard to see, it is in the center of the photo...

Here's a close-up.  You can see the hexagonal post which threads right onto an existing playfield mounting post.  Atop the hex post is a plastic spacer, beveled to slope the deflector properly.

If a ball lands on the deflector, it rolls onto the lower wire ramp.  If a ball lands on the clear pop bumper, the slope of the playfield directs it into the "bumper garden".

Conclusion: nice, clean look and no ball traps!  The only potential downside is if a ball lands directly on the ramp switch; but there's an unprotected switch just like this at the other end of the ramp, and it has never been damaged by a ball as far as I know.