You don't actually point out anything good in older or newer designs... Stern markets their Pro to operators then pulls out the service rails, doesn't include a prop rod, and there is nothing fancy about the hinging still requiring operators to go to the side of a game to lift the back to slide it in. Older games with slides aren't much better.... its far too easy to get the playfield crooked and scratch up the inside of the cabinet. Decades upon decades of pinball and this is the crap we still have to deal with.

Most of my maintenance tends to be on the top of the playfield, thus service rails are used more than flipping it up. It's also a little easier to do flipper maintenance with the playfield slid forward than trying to reach them them 5' up in the air in a row of games you can't fit beside. For all other under-playfield maintenance it needs to be flippe dup.