Look, the minimums are there to promote the sale of the instructor materials and recruit new members who will pay dues to PADI. That's how PADI stays in business. Don't for a minute believe that all instructors are created equal or that they all came up the same way. Rainbow Reef is an instructor mill because what they do is constantly mint new instructors - it's core to their business, which means that in order to make money, they ensure that people meet the minimum requirements and then send them off into the world; most of them to teach for a very short time or never at all.
Shops that don't rely on revenue from that avenue can be more picky about who they work with as they're likely to have a relationship with that instructor after the fact. If you feel you got your money's worth, I'm certainly not going to tell you otherwise; but to the OP: seriously, if you've got less than 50 dives and one of these shops is even entertaining taking you on as a project you should seriously question their motivations. Making you a great instructor is likely not so important as filling their course with candidates and collecting tuition.
Take the advice that's been given to you in every thread you've posted in: take the next six months and go dive the world. Worry about learning how to dive yourself. Put in several hundred dives - put in several thousand. You'll know you're ready to be an instructor when people start treating you like one because they respect your knowledge and experience and you have something valuable to offer them.