He mentions Ceilometer which was recently rewritten (https://wiki.openstack.org/wiki/Gnocchi). Of course whether the replacement will work any better is an open question at this point. Never really understood why they don't just use rrdtool and have done.

Networking which he also mentions in passing is also being rewritten (https://www.openstack.org/summit/vancouver-2015/summit-video...).

I generally agree with his final points - OpenStack really needs to work for the end users, not for the many competing vendors working on it.