I was going to say ACDC until I read this:
Quoted from JosiahCox:I also enjoy the journey more than the high score at the end of the game.
The depth is in maximizing the scoring more than taking a journey.
WOZ might fit the bill, but that's based on forum chatter - I haven't played it enough to really know what I'm doing yet.
WPT gets a lot of love for a deep ruleset also.