I would trade a WOZ away for a TSPP + WH2O all day every day. In my opinion, WOZ is a good game, and you'd be trading it away for two GREAT games. WOZ and TSPP are comparatively deep rules wise. Granted WOZ is a widebody but you are getting TSPP which has the great lawlor upper flipper to ramp flow, plus WH20 which is ramp-tastic.
That's just gameplay. If you are considering collectability and future appreciation, WOZ is still rolling off the line available NIB while WH20 and TSPP are done and no more are being made.
WOZ has its theme haters but its not like 'hillbilly whitewater rafting' is a dream theme to anyone either so I doubt that matters much.
I think as a collector and player I'd be getting two amazing games and pinball tables do get boring so twice the fun with two.