Great if it's integrated to help with levelling, but not a fan for gameplay. The tilt bob is an integral part of the physicality of pinball.
Replacing the knocker sucks, but it doesn't affect gameplay. The tilt bob does.
Same could be said for eliminating drop targets and spinners - there's a way to simulate what they do, but in doing so you change the experience completely by doing so.
I actually think instead of eliminating the tilt bob, it should be visible.