1) I occationally read these, not too often.

2) I ALWAYS read these.  I don't like galleries 
that much that don't have them... too boring for 
me.

3) I water mark cels because a lot of people take 
the images and use them on thier own webpages, 
which bothers me personally.  It's up to you 
though.

4) I think organizing by shows is the easiest to 
both assemble and browse.

5) I prefer clean, well-planned design and 
layouts... if it takes too long to load, too much 
extra stuff cluttering the pages, and you have to 
go through like 10 pages to get to the cels or 
something, it detracts from the viewing 
experience.

Hope that helps, and good luck!