Attaching Files to Cards is Icky+issues

Most wiki and cms systems allow the user to easily upload files that belong to a certain card. If that card is deleted, the uploaded files should be deleted as well.

This does not seem to be an easy task to setup in Wagn: it seems to involve a combination of embedding a plus card of type Pointer and then manually adding pointers to new cards of type 'File', that the user must remember to add with the right name - ie, adding a "+" at the beginning of the name.

I have not found a solution yet that is elegant, or that minimises the risk of the end user not committing a simple mistake, and end up uploading files that don't have any connection to any other cards.

I am a newbie, so perhaps I am missing something obvious - all guidance will be much appreciated.