ARO list multiselect

It would be beneficial if I could make ARO Simple Lists multiselectable.

Maybe even add some more options like "min. and max. number of selected items".

Now if we want to enable users to select multiple values we have 2 options:

1. RO Toolbox
2. when using ROQP (request offering query picker) we have to create custom class, create objects (="list items") and pull them using query

MP enumeration list could have multiselect, too. Example: SR like "I want to get report of incidents with Active andOn hold statuses"

What do you think? How do you handle your requests where "users should be able to select multiple items in this list"? Thank you.