Couch/Local Co-Op (Cooperative) gameplay with two separate accounts

This is an issue with console as well. Grinding Gear Games need to work on Couch/Local Co-Op (Cooperative) gameplay.

We need option to play on two separate accounts in one game client. Maybe this is waiting for the game to be released out of Early Access, but this should be an option besides regular option of playing another character on the same account. This is an issue if the person wants to play the character on their own account. There is a limit on number of characters, so it is not as if space is unlimited.