query_with_result? and patch question

I noticed that rails' mysql adapter uses query_with_result = true
Is there a certain reason for this? Seems that using query_with_result
= false is faster--am thinking of writing up a patch for it. Thoughts?

Also a question--I have a few other rails' core optimizations--is the
best first move to submit a ticket for them or to publish them here or
to core or what?

bash up a ticket on lighthouse and/or discuss it on rails-core