I don't think new mods need to be found to replace everyone that leaves or are removed, but Rickbig was made a Global a few months back and he probably covers both their workload as he's very active in moderating. As I've been saying for years though, workload should be distributed around better. There's been no dedicated mod of big boards like Bitcoin Discussion for years and that certainly could do with it's own one. The alt coin section is getting swamped now and mprep was always overloaded as it's a huge board, but now that section is getting worse since he become a Global and doesn't have enough time to dedicate to it.