To me, the showcase is NOT like an "Elvis has left the building" concert. It's like a venue where people are still able to connect with you. When I performed live people were always coming up to me saying nice things. I never ignored a person just because I had already said thank you to the whole crowd and left the stage. No, I stopped, listened, smiled and thanked them on the spot where ever they walked up to me. I always thought every person who went out of their way to personally compliment my music deserved to know I appreciated them right there and then.
Not so different here depending on how one chooses to think about it. I still choose to feel that way when people comment on my songs whether it's on the song thread or something they'd rather say in a pm. I respond as soon as I can in kind. The showcase forum is fine as is for me.
P.S. - I think most newbies know how to scroll and explore other pages.