Here's a possible refinement of 3TE.
proto-proposal: limited VC market
AI: 2
{{{
Amend rule 2126 by appending to the list of ways that VCs may be spent
e) A player may spend two VCs of the same color to make another
player gain one VC of that color.
[If someone only earns VCs in one way, and so of only one color, e can
acquire VCs of a second color (in order to spend them in the
interesting ways) by cooperation. It's a lot less efficient than
earning VCs of a second color oneself, so there's still the incentive
to partake of more than one in-game activity.]
}}}
-zefram
