I've developed a few trade secrets that help the reader stay focused while a massive image loads.  I'm aware of the slow load up times.  At the same time, I'm an artist.  You're giving me good advice and bad advice at the same time.  Some things are worth waiting for.  People have really enjoyed the massive ones.  I can still dial those down though, without much of a quality hit.  I'm sure there's a happy middle ground that doesn't stunt my creativity.