I don't agree. You say the consolidation phase is over and we should just improve the existing clients? A lot of devs are doing that, but the forks still don't succeed and only stay accessible to two or three users. And by now, whole capital funded companies have sprung up around these open source projects, running their own strategies.
And regarding „they don’t offer anything“, you haven’t tried out NoorNote yet. A lot of new features in it. And if it’s still not enough, build your own client and show us all, what you mean.
