You dont have to lock the map after release. The feature has 'link to original thread' on the bottom' and sometimes people like to reply here. Besides, Ivory can lock his on thread, so its up to him.
Matty, you have to be a premium/loyal to lock your own threads. He can't lock it, but he asked in his post to lock it, I think. It's locked, send me a pm and I'll open it though.