Both Firefox and Firefox for Android have a feature called Shortcuts for their home page. Shortcuts is essentially a list of recently browsed webpages, with the ability to pin a webpage, so that it doesn't disappear if you don't open it for a longer time.
I want this list be entirely controlled by the user. Firefox should not add items to it from the browsing history.
UPDATE: This idea was already suggested 2.5 years ago. It has 100+ upvotes as of today.