AHHHH, the Optivisor! I gave up on the fountain of youth long ago, and then recently discovered the Optivisor products. But you are right G.A. the next move may be to a magnification factor beyond their present catalog.
I have nothing but admiration and envy for those who work in "Braile Scale", I started out in 1/72 when I got serious about modelling in the 50's/60's, still love to look but can't imagine working in it. As someone said earlier about progressing to 1:32, in a few more years I'll be checking out the inventory of 1:24 Scale!
Cheers,
Lance