I came here for this exact reason. I used to mod back in PS3 days, and used to go live on youtube when Live first came out, ive really missed these modes over the years and finding my way back. I remember back then to inject certain GSC files we would use GSC Studio which doesnt seem to detect plutonium due to syntax error - maybe due to the fact they are no longer updating the keys? idk for sure all i know is i load ZM mods just fine with regular GSC file into scripts file but cant get any of the modded game modes to run. Also willing to contribute financially to get this going. Hopefully this reaches the right people.

GoofyScodup
@GoofyScodup