> Some stats (I know you all love stats :-)):

Some more stats here ;)

http://elinux.org/images/b/b0/Sang-ELCE2013_WolframSang_WeHaveAScalingProblem.pdf

One thing that you can see there is that the number of authors increases
faster than the number of reviewers and committers (= gatekeepers/maintainers).
So, IMO the situation is likely to get worse.