The Model Car Museum is NOT a Hall Of Fame. It's primary goal [from what i can glean] is to show the Industry as a whole and its progress through the years. As such, there should not be any limits [and none I could see] as to who is represented there. We lost Augie too early so his being there is really a no brainer considering his many accomplishments..But Juha Airio is probably the most competent builder on the planet. His inclusion is also a welcomed idea, and he seems FAR from retired. Were I inclined to tell TMCM how to go about their business [I am not] I would suggest a "Leading Lights" type feature showing the movers and shakers of the current time. Builders and writers alike. But it is a MUSEUM and as such, is constrained only by how it's board chooses to move. Museums can and often show current exhibits of modern works as a way to keep current and showcase things that will IN TIME, be permanent fixture worthy.
What the OP seemed to suggest was an outright HOF. A completely different set of criteria and ultimately worthy of discussion.