A TWIST FOR THE END DIMENSION!
Start your journey in the End on the outer islands, 3,000 blocks away from the Ender Dragon. You'll need to find your way to the battle!
If you don't want to fight the Ender Dragon, End Gateways are your way out of the dimension, teleporting you back to your world's spawnpoint.
It should work with any world generation mod/datapack, but it may be unnecessary (like End's Phantasm or True End, which achieve the same thing)