I think the minerals needed to build a block for a gate should scale. Right now it seems to start at 100 minerals per block, and (needs testing) goes up as more rings are added.
A server that has 100 people playing, and a server that has 1,000 people playing, will have different levels of mineral generation. Something that is designed and scaled to work well during a preview event won't work in release, and visa versa. As the population of the server changes (game becomes more, or less, popular), the need should also change.
Basically, the difficulty for the player base to do "joint effort X" should be about the same, whether the player base is 200 or 15,000.
(A straight implementation of YPP's dynamic spawn to determine the difficulty of the next block is abusable by hoarding. In fact, all the "easy to think of" ideas I have are abusable by hoarding.)
I don't think there's multiple servers, though.