1) Gamespy will do nothing of the sort. Apart from the fact that it would violate the SCP license to produce any commercial product with this codebase, they simply won;t be interested.
2) If Kazan has put code in that has limitations, that code should probably be removed, it's implied that all code in the SCP is under the same license as the SCP itself, if we have to make this explicit (and while i htink about it, it probably should be) then we will.
So basically, if you have integrated code into this project that is not freely distributeable and re=usable at least to the extent that the SCP itself is, it needs removed. If you put code in that varies from the terms of the original SCP license from Volition, that code needs clearly marked and the SCP members need to evaluate its inclusion. And you need to immediately give us the terms of any license outside the original SCP license (I am using SCP to mean the orighinal volition source release).
Projects like this cannot survive if limitations get placed on the code post implementation. I know you mean well by making hte above demand, but that statement that YOU will pursue legal adtion implies some pretty far reaching things. I beg you to reconsider that usage and post the terms under which your code can be used so we can make an informed decision on it's inclusion. Keep in mind that it cannot be a GPL release, as the SCP is not GPL to begin with. If you must release your code with conditions, I strongly recommend a license identical to the one Volition used to release the code. I prefer that the code added to the SCP be released as public domain without limitation.