Here was the suggestion of official 3rd party plugins manager/store (central database) in suggestion platform, post at 3 months ago.
But there was no official comment of this suggestion, only "No status".
What's the plan of 3rd-part addon repo?
It is important for c3 users, imo. For example, a c2 project might have more then 50 3rd-party addons. User will
1. download them one by one, 50 times (or more)
2. install them one by one, 50 times (or more)
When the cache of browser has been cleaned, user should repeat these two steps again. It's annoying.