The way I see it the games of the late 80's and the 90's tend to have more of a pure fun factor. I would tell you that I find Whitewater more fun than LotR, but overall I like LotR better than WH2O, if that makes any sense. I really like digging into LotR and when you have a game where everything comes together it's amazing, but every time I press start on WH2O I'm guaranteed a fun time.
I'd love it if some manufacturer were to come out with a new System 11 style game. Give me something with a simple but quirky design, simple rules with difficult objectives (I miss the days games just had one hard to hit jackpot shot), and put an emphasis on great sound design. I suppose it would be difficult to sell as it would probably be similar in price to a Stern Pro, but if people realize that the amount of fun they can have with a game isn't equal to how much depth it has then I'm sure it could sell enough to be worth making