I think it should be a bit harder to get. Let me elaborate. Yes, I know the elytra as it is is hard to get but I think it should be harder. The elytra is so crucial late game that many consider it the boundary between early, mid and late-game. So, I think there should be another obstacle to overcome in order for it to be obtained, but still in a way that multiple people can get one. Maybe a boss that only spawns in a rare structure that can't be respawned, or just make the spawnrate of the ships less common.
Everything you can do with LMB you can do with RMB and more. "Oh, but you can't attack" you can use projectiles. "Oh, but you can't mine blocks" you can place and light TNT. More so, you can place blocks, interact with them, eat and still move items in inventories, although less efficiently, using right click.
Unpopular opinion, it's rekrap. I love the effort and quality he puts into his videos and you can tell he loves what he does and has a pure passion for Minecraft, which is something I value a lot in content creation. I naturally find myself flocking back to his videos just because I love his vibe.
Infinity. Controversially, I hardly use bows at all. I prefer crossbows just because of the damage increase, and the fact of being able to pre-load them to be able to strike quicker.
110 just because I like seeing everything around me. I play survival pretty ambitiously which means I like to build big and get stacked quick so when looking for resources being able to see everything is important.