I have been a Toolforge user for several years and have created several tool accounts. Tool accounts can't be renamed and can't be deleted by the user, so I have no way of making them disappear from Striker. My understanding is that deleting tool accounts is non-trivial, so in the meantime I would like the ability to "hide" tool accounts from the menu.

Possible workaround: designate a dummy account for abandoning tools, make that account the maintainer of tool accounts you don't want anymore, and remove yourself as maintainer.