Crispy pointed out in the other thread that capping entries at 10 per member would only create between 2 and 4% additional availability.
That's not going to have an appreciable impact particularly if it filled up in 8 hours.
Crispy is correct, but only if you assume every brewer would use all 10 entry slots available to them.
It all depends on the average number of beers entered by each individual.
For example, when I looked back at my region database results in San Francisco, approximately 9% of the brewers in our region accounted for over 32% of the total of our 750 entries. That's a whole lotta biscuits!
We had a total of 127 brewers entered, of which the largest entry count was 36. But many other brewers entered 25 or more beers. If you consider knocking entry limits to 10 or 8 or 5 per brewer it would greatly increase inclusiveness.
Running more numbers shows that the vast majority of brewers entered less than 5 beers. So there will be a spread of brewers sending 1, 2, or three beers. Weighing in the percentages of folks with one entry, 2 entries, etc... the pool of available entry slots would expand much more. When I factored 20% of entrants entering one beer, 15% of entrants entering 2 beers, 12% of brewers with three beers and so on - I can get another 30 - 40 brewers able to enter the competition. That to me is a lot of additional folks who can get involved in this wonderful experience.
Maybe someone at the AHA is a wiz a calculating complicated crowd formulas and could better describe this than I can?