@julian I have seen the 0.2.0 version of Persona in the admincp and the "only cleared to upgrade to v0.2.0" message with the 0.7.0. Ended up moving to the master / 0.7.1 branch to get rid of some issues which I could not figure out.
Sounds like something that should be part of a theme to me.
If you wanted to make such a theme, in-place editing isn't really difficult, you're just swapping visibility between a text block and a text input. Client-side you would only do the swap for the correct user(s), and then server-side verify and actually change the topic title.
It must be better to fix the requested requirement instead of migrating out of NodeBB. I ❤ this projekt and my goal is to learn more about its architecture. One problem, time ... But I will get there 😛