You are one of those "magnifier" guys, aren't you?
Maybe he is, and I'm going to be one day also. If adding this feature gives the LabVIEW community one more member like BenRayner, who has a history with LabVIEW as an enabling language, the investment will pay off many times over.
That being said... changing relative wire/font size provides a challenge that has no current solution: pixel spacing is important in LabVIEW. As an excercise, change your default Application Font to 24 and open a few BD's... you'll notice that things like property/invoke nodes and bundles/unbundle by name have wreaked havoc on your Block Diagrams (this is already a problem in multideveloper environments where different workstations have default font sizes of either 13, 15, or 17). In other words, this is a problem independent of accessibility, but finding a solution may provide a more accessible environment.
MarcoMauri, would tst's zoom suggestion be a viable replacement for the sizing issues? (I think zoom is the only way to solve the problem mentioned above. Force every environment to have a fixed font size so that relative sizing remains constant and nodes can properly align.)
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