Agreed. The nudge zone is so high on an iPad that it makes nudging impossible. How about putting it in-between the flippers, at least on that same horizontal plane? There's no way in hell I can reach way up there with my thumbs...not even on an iPad mini 4. It's likely doable as it is on an iPhone. Or make the tap zones configurable. I brought this up numerous times in the beta but see where that went...I gave up on nudging early on as it is just too difficult on an iPad in portrait mode.
Lighting, sound and especially the physics on Zen are top-notch. Going back to playing the tables in TPA, the ball just feels wrong...way too floaty.FarSight got a lot of crap from people about their TPA app, but they got a lot of things right. Zen could even see what they did, but still missed the mark in many areas imo. Zen nailed the sound and lighting. I don’t think you can do it any better on a mobile platform with current technology. But I’d currently rather play TPA.
The other thing you could do for nudging is have two input detection types in the flip zone.
If tapping (with a tolerance for micro-swipes) you're flipping.
If you make a swiping motion in any of the flip zones, you're tilting in the direction your thumb is swiping.
That way you could trap on one flipper and nudge on the other to better control balls in multiball.
I know Android has a library that can detect intent between tapping and scrolling, and I'm sure iOS does as well.