Profiling/monitoring with Mongo::Protocol::Query#payload

Currently the #payload method:

https://github.com/mongodb/mongo-ruby-driver/blob/3d8f27fd689e01be409b52539f716fab987a7c19/lib/mongo/protocol/query.rb#L80

Doesn't return the collection, as the deprecated and removed #log_message did.

Is this intended? But either way:
Is there a better place to hook some sort of monitoring code than Mongo::Protocol::Query ?

As an example, two projects that do that (hook on Mongo::Protocol::Query):
github Peek and RackMiniProfiler 'https://github.com/MiniProfiler/rack-mini-profiler'.
The later mongo 1.x, the former moped. I'm currently trying to finish the support for RackMiniProfiler:

https://github.com/MiniProfiler/rack-mini-profiler/pull/156
https://github.com/nofxx/rack-mini-profiler/blob/master/lib/patches/db/mongo.rb

Thanks you!