[comex]

It's also apparently a pain to integrate into anything else...

http://www.freehackers.org/VimIntegration

...and plugins can't update things in the background...

https://groups.google.com/forum/#!topic/vim_dev/-4pqDJfHCsM%...

etc. I haven't looked at the code myself, but it sounds like a rewrite or major refactor would be very useful.

[aktau]

It's happening as we speak (since a few days, based on the crowdfunding campaign). It seems like there's quite a bit of people (volunteers and would-be volunteers) participating already. Voting about the preferred voting style is about to end:

https://github.com/neovim/neovim