Hiding empty categories would be helpful. As it is, you may have to click on a number of them when searching for something where you don't know how it got classified, and empty categories just add work to that. I, too, use mouse and keyboard, and I rather like the larger buttons, and particularly the larger text. It's much more readable than the old format, at least for my eyes. But on a smaller screen, they probably would be too large. What constitutes an "adventure" is an interesting question. I happen to own the Guildmaster's Guide to Ravnica, and I can see three handouts in Adventures tied to it, which turn out to be the subsection of chapter 4, Creating Adventures titled Krenko's Way, divided into three parts. This is described as a "short adventure" in the book, and seems to serve as an example of how to use the material in the preceeding sections of the chapter. But the other sections are not classified as Adventures. For example, a part of the Boros Legion subchapter shows up as "Adventures - Boros Legion" under Rules, which seems misclassified to me as it is about adventure hooks, character motivations and similar material for creating an adventure. That may be how Wizard's felt it should be split up though. I, too, see the problem in Monsters, but I'm seeing something similar with Spells, which stops after 32 entries with the scroll bar bottomed out. Oddly, the other day I had a similar problem, but after a little which I could scroll spells futher. It felt like a back-end problem where the server would send me some data, then de-prioritize my request and only get back to it after a few minutes. But it doesn't seem to be doing that now (Firefox, recent or current version, on mac).
