Don't expect many thumbs up to reach your OP.
They tried what you're suggesting at launch. If you don't remember, it was a disaster. This is now and is developing even further into a party-play MMO, as XI was and as XIV should have been from the start.

Most people play with parties and if content and quests and missions are designed around `Guofunaki who doesn't want to play with anyone` it'll all be back to being boringly and pathetically gimp for the rest of us.
My advice to you is to go do a leve.

That or go play a single player game.