[Feature Request] hidden posts improvements - expiration, grey posts, and scrolling off screen

Since the days of alien blue on reddit, I've always had a way to hide posts I've already seen automatically. Must have feature imo. Love that this app already has it. I want to suggest a few improvements:

1. The option for posts on that list to be automatically removed. I.e. setting expiration to 2 days means that posts will only be hidden for a couple days and then come back and be visible again. Auto hiding posts is mostly good to not see the same things over and over again over a day or so, but after that, I'd like to be able to view the top posts of a community or look for a post I saw before without deleting my entire hidden post history
2. Posts marked to be hidden should go grey, exactly like they already do when you open the comments
3. Posts should only be marked for automatic hiding if they scroll off the top of the screen, not posts that I haven't scrolled past

Thanks for reading. I'm sure your to do list for this app is astronomical. Hopefully it has room for my suggestions too.