Please add a module for registered users that simply displays a list of checkboxes in front of mailinglists.
This way a user can either add or remove themself to/from a list.
Nice to have this module in the submenu when a user is logged in.
Please feel free to add a feature request, on our feature request page: https://www.acymailing.com/feature-requests/.
Other users can up vote ideas, so the devs can see what the most wanted ones are.