It could be nice to have an easier way to enter game wins and ties with the mouse. I appreciate that it's quick to do with the keyboard using the tab key, but there's a lot of clicking around when you want to do it with the mouse, and the "tickers" that let you add or subtract 1 are quite small (I know it's the default browser look, but maybe some custom styling is warranted here).
The official Wizards app they use at LGS' has buttons you can click to enter results like 2-1 and 2-0, I think, which could be nice if they look nice and feel intuitive.