I have a number of reservations about the idea of allowing images in posts across most of FT that have me saying "thanks, but no thanks".

Along with bandwidth/handling issues I can see this leading to other problems too, including things like some images being misappropriated and distributed despite not falling within a legal fair use doctrine; images being used as part of debates or for purposes of provocation; inappropriate images being put up by fly-by-night trolls; and so on.