Quick remark (haven't had the time to formulate a full response), you mention not allowing coins to join that have a premine but Mintcoin had a premine, and it is that premine which will fund the formation of this foundation (that was the impression I was under). So, Mintcoin will be spending its premine to build a foundation which other coins (which have long criticized/bashed us for having a premine *cough* BC *cough*) will then be able to join for free? They will be benefiting from the premine that they have long targeted in their attempts to sabotage the progression of this coin? I'm not sure I understand...
Edit: In other words: If we are going to be using the mintcoin premine to fund this foundation, how can we allow coins like BC to benefit equally without paying equally especially considering the fact that they have, since the very beginning, painted the fact that we have a premine as a negative and used that fact against mintcoin and as a means of promoting BC in comparison... It just all seems kinda backwards..
Premine: Mintcoin will be an exception (that's one way to give mintcoin a preferred position, by the way). I am not sure if the premine will be used for the foundation. The dev made it clear the premine is for the
mintcoin foundation. One way to have the best of both world is if dev is OK for financing a mintcoin project inside a larger (but mainly mintcoin-driven) foundation.
Project from other coin will have to be financed by the said coin. Leafcoin want to raise crops in Gobi desert? Alright, make sure to gather the coin by yourself, leafcoin. All we provide is the structure, not the funds.
As for visibility, it could be something like "powered by the mintcoin community", for instance. As I said, this is still a work in progress.