In modern machines...actual plungers and actual skillshots - not just the upper lanes, but things to aim for. While maybe not completely under appreciated, they have long since fallen to the wayside.

My favorites are probably Funhouse step ramps and TOTAN. Also T2 even though it isn't a plunger.

R&M has this.

First world problems, but machines that aren't a full on computer inside. I hate waiting for the new games to boot up.

Doesn't TNA do this?

I'm pretty sure Time Machine also does this the way mine is set up.

From a 'don't have to take the glass off' perspective...that isn't really reliably possible except maybe on the shooter lane with it tilted up enough that if it doesn't make it, it comes back down to the shooter. And when I say shooter, I mean an actual plunger, not a coil/kicker.

There is the rollercoaster-esque ramp on Oktoberfest that is cool, but from listening to people talk about it, waiting for the balls to get through it gets old.