I am not worried. This should be expected and seen as a good thing. I believe there are far too many distros because people want to create their own garden with their own favorite flowers. Very rarely is there a reason to fork a distro and even less common are there enough people to maintain an entire distro. Rather, people should be focusing on and contributing to one of the popular distros so that more people benefit over all. If people are ignoring your merge requests that is a different problem.
A simple analogy would be television channels. 400 channels of crud, including 15 different versions of C-SPAN or 40 channels of great shows, which do you want?