"The club could use this as an additional revenue source and take on the responsibility and employ authenticators. "

DUHH!!! This is exactly how slabbing started in coins, A little coin club got they idea to start a grading service.

Anyway your "solution" is only a solution if you think that the problem with slabbing is the case. And while the case in in fact apart of the problem, the real problem with slabbing is the reliance on a third party to grade or authenticate chips.