Originally Posted by
Recon1o6
Currently the only solo content at endgame is your relic, and even though eureka could be done solo up till the arsenal, to even have a chance of completing the max level fates you needed to get in a party anyway.
Thing is the relic isn't hard, its just slow more often than not. There's not really anything to test the player's individual skill at their job that is not a party duty.