I'm wondering if the sample data part of the install (assuming that the databases are being updated) could be optional.
Actually you can do that now...there is a component option when choosing the components that says "Samples." If you do not choose this, then it will not install the sample database. I guess we could make it more granular, but the problem then could be new SF trials and users not installing that database and prompt more support questions...but I will consider adding that, but for now there is really no reason for you to load the samples...you are a seasoned professional