So by saying you'd take down the site "out of respect"  - doesn't that imply that the model is not respectable while she's alive?
In the case of the wife and I...we've always been proud of the artistic adult images we've created together over the years.  To have someone take them down after we're gone is like saying we were ashamed of what we accomplished with our work.
This is another of those questions that's difficult to answer without getting in to generalities.  Every situation is different, depending on the individual and circumstances.
Would I take down the images I shot of another model if she had passed on?  No.  Aside from the fact there's no clause or provision in the contract that obligates that...to me, it denegrates and belittles the model's decision to model in the first place.  I would think its more of an insult to the model to take them down, than to allow them to continue existing.
Just my  
