i mean - i REALLY think you are in the minority here - most "nomad" players i know appreciate nice world generation and lots of things to explore and do - not exploring barren wastelands looking for a good place to make a base... if anything they seek out unique/stunning world generation with lots to look at for a base (if they ever make a base, many nomads dont)
Its still a big challenge to build anything significant in the end - you can build out in the void of the end no matter what new generation they could add, itll always have void.
And there are several biomes that are still "barren" like desert, ocean, and mesas - and there already are ways to edit the world generation in all kinds of ways youd like... but im sure they wont replace all islands in the end with better ones- there will still be barren end islands too
As someone who has played since prealpha before survival or hp was even a thing, im so suprised to see all the hesitancy in people getting wonderful new content and nicer generation (when mcs world generation has been behind average for awhile now)
"Hat Box" 
- Grants Temporary Invincibility
- A charge and shoot blaster weapon
- Control a Damaging Stream of water!
- Massive damage after a time - sticks to surfaces and players!
- Send things back where they came from!
- Deal 4 x 1d6 damage to all nearby enemies!
- Explode 3x3 blocks when you dig and mine!
