Yes, please. Hiding posts / hiding NSFW posts after clicking on them would be huuuuuge for me! (yes, I know, I should know better, but curiosity gets me every time)
Yes please. I like to scroll through all, especially to find new communities that I like. But there are a lot I know I'll never have any interest in, and would make it better to just block from all. And going into the community just to block it is a bit annoying, especially if it's a NSFW community