Investigate pros/cons of the lockout mechanism

[Others]

The Lockout mechanism is basically a shitty read/write lock. We could replace it with a single monitor/condition variable around collection. I don't know if that would help or hurt performance. I do suspect it would remove a lot of memory overhead in the collector backend for various reasons. Lots of unanswered questions here.

Blocked by #19, which is making the Lockouts not pull their weight