Thank you, these improvements are great!! I am really glad you are prioritizing stability. Also, I don't want you to be overworked. I feel like you understand the potential of the fediverse, and how best to create something good and lasting.
It just seems to be working better in general, and it feels like I am seeing more content and maybe even more engagement.
If I have to pick some, improved moderation and collections are my favourite improvements. I'm already finding collections useful (both mine and other people's). I like how we can see crossposts too.
I wasn't able to work out how the * button worked (and now it's gone for me on mobile), but that's okay.
Thanks for sharing your site with us, and all the work you do. It's really exciting seeing it develop!