Information Modal without Input

Hello there.

It would be great, if we could create Modals, without any input. Just to display additional text about something.

Like i dont want to create a channel and write somthing in it, just to let the channel stand there.
My idea is that for ex. when someone joins, my bot send that information modal, so the user has information, diractly at the beginning.
Maybe also add a timeout to 'remove' re modal. Maximum 10s or something like that.
So the user canot just accept/deny the modal, without to read it.