The whole point of pronouns, I would argue, is to not need a separate set for every instance.

Otherwise you may as well just use Dan/Dan/Dan’s/Danself conjugated for each name.

Pronouns:

• Are (generally) shorter than names, because there’s less need for them to be unique and they’re used more frequently.

• Can be used even when you don’t know specifics about a person or object, or they don’t want to give out their name.

• Everyone knows how to conjugate them, so once you know someone is a ‘they’, you can readily extrapolate to them, their, theirs.