[jpfr]

  I know for a fact that if the Emacs developers weren't
  doing a bang up job, which they are, then I would
  immediately allocate some of my time to help.

Development is going great IMHO. However, the bug count is steadily increasing. Any time invested into emacs is well spent.

https://lars.ingebrigtsen.no/2016/05/03/emacs-bug-trends/

[unhammer]

Same author also wrote a nice, short intro on how to get started with Emacs bug hunting: https://lars.ingebrigtsen.no/2014/11/13/welcome-new-emacs-de...