How about 2500 hr's. That would be somewhere around 1000 hr's instructing plus maybe another 1.5 - 2 yr's real world experience flying boxes, pax, lab work,etc. I know not all people would would get out of instructing at 135 min's to build time, but I believe enough would to advance their careers. I am not bashing CFI's, just pointing out how very controled the environment is in which they work. Just a thought.
Living the dream, one nightmare at a time