I think filters for sections would be a great idea in general, filters for notifications as well as the homepage would be a double whammy. Reddit does things like ‘Best of…’ then you can choose to filter by ‘The month, the day, the year, or of all time,’ and that would be a great way to organize Bytes in each section as well as home feed. That, and of course, filtering rebytes.
The same goes with notifications. I hope we’ll be able to filter things by comments, likes, or all. Because there are plenty of times I’ll miss someone pinging me in the comments because my Byte has too many notifications, so a way to organize things with a filter option would be nice.