Truly behind on the competition on every level except for userbase. Getting acquired by Meta has somehow infected them with Facebook's inability to innovate on its own rather than copy/buy competition. Only thing that could bring them up to speed and maybe bring back some of its lost users is some groundbreaking new set of features (such as pinned messages or an AI summary or idk I'm no developer) that would make large group chats - the primary pain of every IM client today - more manageable.