I hope not to sound pushy by bumping my own wishlist topic but I feel this feature is more worthwile now than a year ago. We're on the verge of 2k (3440x1440)/4k (3840x2160) screens mass-producted, with several models already available under 1k$. And 8k is the" next step.

With the current Win 10 style changes, an unlimited thumbnail size could be a great thing (a bit like the Facets Foobar component).