All you got to do is ask man.
"Hey guys I'm thinking of doing this for the airsoft world, thoughts/feelings" etc..
I hate to say it, but I know a handful of guys who are not overly enthused about the certification thing at your field.
In the end it's your field, but if you do want to appeal to the major airsoft world (here) then I would ask publicly what people are looking for, and what they think of some of your ideas
Maybe you should come out to a few other Airsoft events. Maybe Flag Raiders?
They have been doing airsoft for a good long while now, and do things (in my opinion) amazingly well for the airsoft world.
I'm sure others would agree, no?