Idea: add an option to block the annoying "Sign in with Google" prompts that some sites (for example: https://chromestatus.com) use on the mobile versions of Firefox and Firefox Focus.
Reasoning: blocking those popups are easier on desktop as extensions like DuckDuckGo Privacy Essentials do it automatically and Ublock origin does it but you have to type "||accounts.google.com/gsi/iframe/select$subdocument" (without quotes) into the my filters section, this isn't possible on Firefox Focus as Focus doesn't have any extensions and the "Block other content trackers" feature doesn't block them either.