Based on the history of the tech industry, Linux adoption should be kept at this level and advanced no further. This is already the sweet spot for the "year of the Linux desktop," which should be celebrated by experts, technical users, and the sufficiently motivated. Once the unwashed masses start coming in, the software and its interaction patterns pander to the lowest common denominator and the quality of the mediu…
Pandering to the masses would be in the form of specific desktop environment, and maybe specific distribution integrating it well with all kinds of desktop software.
Nothing would change for the existing users of obscure software, hackishly stitched together.