I have long felt that the following is an easy way to improve pinball sim sound: simply record more than one sample of each effect (flipper flip, ball falling in scoop, bumper, etc.), and choose a random one when it's time to play one. I think having, say, the ball-falling-in-scoop sound be exactly the same every time, hundreds of times per game, detracts from "immersiveness" (immersitivity?). I'm not saying this is the best solution, just a (probably?) very easy one.
Totally agree. FS recycles the same "chicklet" sounding effects at super low and crunchy bit rate for all tables. No love. I find myself posting almost exclusively negative comments here, only because TPA could be so much better if they put in just ten percent more effort!
(And a complete ball physics engine rewrite)