The following question was closed as overly broad:
I thought this question had potential, but agreed with the closing because it was a multifaceted question that would draw too many, and long-winded answers.
In my opinion, there were actually about three (give or take) separate questions buried under the one framework.
One question might have been, "What mechanics, including house rules, have you seen in games that create scarcities, and therefore keep them tight?" (With examples)
Another question might have been, What mechanics, including house rules, have you seen in games that reduce complexity and therefore speed up the game?" (With examples)
A third question might have been, "What features, including house rules have you seen in games that create exciting asymmetry while keeping "randomness" within a manageable level?
Can a question of this sort be meaningfully broken up into manageable pieces as described above? Or is it necessary to start from scratch?