Would "Sgt. Pepper's" be a better album if.....

Yes - love "Within you and without you".  Probably more responsible than anything else for my spiritual quest starting in my teens.  

But beyond that, it really cemented from the first listen that this album was revolutionary.  If you really listen to Sgt Peppers, it hits you that other than "Within you.." "A day in the Life" and maybe "Lucy in the Sky" the rest is pretty much polite Brit-Pop.  (Though as good as it gets).  

If LSD ruined rock, then you're not a fan of The Beatles, Pink Floyd, Led Zeppelin, The Doors, Yes, Queen, etc.  I'd say you're missing out..