@DererminedOne I am sooo sorry about the dr you saw.
Isn't a MESA the same or very similar to a TESA? In that case can understand the dr saying the success rate is low.
There is always the mTESE in the eastern states. We will be getting ours done in about 7 months time in Brisbane. The plan is for mTESE & IVF same day for the same reasons as you because of the freeze & unfreeze survival rate.
This is the website for the one in Brisbane: http://www.androurology.com/