So far I am really enjoying the Beta. Performance has improved, mod pages, browsing, etc looks amazing. I have quite a few games that I mod for and now the user interface is more sleek and performance friendly. I also noticed that you added a language browsing feature which makes filtering by language now possible. I come by and check Nexus for new mods at least once a day and some do not support my native language, but now with this filter I can search for mods that have my specific language support and keep track of when mods have been translated. I never comment on beta posts but this one is too good not say anything.
The main games I mod are Fallout4 and Stardew Valley, so I can say with confidence that their respective sites are perfect for myself and others in the community.