This is a topic I think on once in awhile. Junior in HS when The Wall came out and it was my first real exposure to Pink Floyd then on with life and other matters kept me from hearing much more. Now they are one of my favorite groups and I much prefer their very early albums. At first I thought many of the songs were absurdly self gratuitous. They were and I love it! They are very musical though. Complex. I can't help but laugh out loud every time I listen to Several Species of Small Furry Animals Gathered Together In a Cave and Grooving with a Pict.
Anyhoo, my favorite band had a change in their line up after their first album and I think it made them who they were. Rush wouldn't have achieved the the success they did without him. Some bands can't survive the departure of a key member. Some bands live on without any original semblance of themselves. I think Great White has had 41 different members. I still don't consider Foreigner to be Foreigner without Lou Graham. Journey isn't Journey without Steve Perry. Pink Floyd though survived and did well without Waters. I appreciated their music with him but I often had to disregard his lyrics and daddy issues. Syd Barrett was a genius IMO before his cheese slid off the cracker.