I think a lot would be missed out if it were just 4 pictures. Having said that, as TLM pointed out, it would be extremely unweildy.I think it's a good idea but maybe limit it to 4 photos or so?
I did a group exercise in training once where my team had to list all the steps involved in painting a door. Unfortunately for the trainer our group consisted of people who liked detail etc. When asked to read out the various steps the trainer had to stop us at about the 50th step and we hadn't even got to opening the paint. Mind you we were being rather pendantic as none of us wanted to be on the course so really went to town