Well eventually, all groups should merge anyway, as it provides highest efficiency in GNW and X-GNW, and guaranteed victories in both. It would honestly make for a better experience if there were 2 or 4 dominating groups that were all evenly matched, as it is more fun. I was the leader of a group as well, but only for about 5 months we thrived, then it was same 5-6 people on every day, so we ended up merging with the top group, as we had fallen behind.