Should I end some characters storylines? (Patreon)

The title isn't quite accurate, it should be "Should I end some characters storylines in favour of adding new characters?"

This isn't an immediate plan, don't worry no-one is going anywhere yet. I'm just thinking for the future, would people like to see new storylines added with new characters? The issue with that is, I wouldn't have time to add more story to even more characters, so someone would have to have their storyline end in order to introduce someone new.

So, should I consider ending someones story, which character I choose would be polled, in favour of adding a new character?