Modern animation with the Big 3 would go insane.

They each get to their respective big moments & establish who we will be w/for this journey. It's a reason they are the mold by what Modern Shonen is guaged by. Typically, it takes multiple episodes to get started in old anime & spends more time getting to know MCs. The big 3 does all do it in 1

Bleach: Tone set w/Rukia stepping ethereally on post w/ the moon behind her. Chills. Now Ichigo protects spirits memorial. His chivalry then versus his attitude later hilarious. Meets w/Rukia leads to hollow attack. He begs and pleads for a chance to save family. Now you feel like #1!
Big sword! Fin

One Piece: Establishes mythos w/Roger's execution. Cuts to backwater Island. Introduces tone with mix of humor and bandits. Shows Luffy is a free spirit and will just do as he pleases. Sets stakes with Pirates v Bandits. Ups the ante when Luffy is scooped. Shanks' sacrifice. The strawhat is passed

Naruto: Hokage preamble. Fire. Sets a tone. Shift to troublemaker kid hijnx. Shows potential rivals and supporting characters. Slapstick & gags. Establishes he's alone. "THE SWING" Works hard even w/little talent. He trusts his teacher but is fooled. Steps up after messing up. Takes 1st step

Objectively, I'm of the mindset to think they all still pop off. Cause legitimately, they all have great 1st episodes. Couple that with modern animation?

Not convinced? Okay let's go 1 by 1 for each beginning episode