Well, I hope that in the future when I am an Instructor, will be known for my own merits (good or bad) rather than whatever the current reputation is of whatever organization I choose to teach from.
Hopefully, my reputation as an instructor will be just that. MY REPUTATION and not what other instructors are doing in a particular organization. Quite honestly, I believe I'm going to be pretty strict on my standards.
Good luck with that. Whilst it's feasible, it's a long slog to develop that reputation and some people will never even give you a chance.
Let's say, for the sake of argument, you became a PADI instructor. It doesn't matter how good your courses are, how well you engage with your students or how great their skills are..... 95% of members of Scubaboard will slag you off for the low standards of your agency, despite never having met you or ever having seen you teach.
The crazy thing is that the basis on which they think the agency standards are low is normally wrong..... A PADI Cavern instructor had a rant on SB at the end of last year about PADI standards being low - particularly because PADI (supposedly) didn't allow students to train in doubles and didn't allow the conduct of gas sharing in the overhead. Yet both of these restrictions were removed from PADI standards several years before hand. And that was a PADI instructor..... slagging off his own agency.
The agency you teach for is what opens the door - once you've got the door open, it's then up to you to sell your individual wares and build your reputation. Over time that reputation will grow enough that you no longer need the calling card, but in the early days of an instructing career you simply won't get any students unless you leverage the reputation of the agency you teach for.
Let's assume you just want to market on the basis of your reputation. That means that you need to remove any agency specific references to the courses you offer. Why (seeing as this is in the cave section) should someone do the Superlyte27 cavern class as opposed to doing the TDI class offered by Joe Bloggs down the road? You can issue your own card that says that the person has completed your course - but when they travel to Mexico, are they going to be allowed to do dives in the caverns?
Don't get me wrong - I'm not picking on you! But you can't separate the instructor from the agency.