I disagree about upgrading to 200 amps without doing any load analysis. I have found that in most all cases, the electric service is underloaded not overloaded. It has become a point of macho pride to some homeowners about the size of their electric service; "mine is bigger than yours" has grown to include the electric panel too.
It is true that some homes have old, worn out services, and it is true that it does not cost all that much more to install a 200 amp panel and riser. But, if the service and panel are still in good shape, I feel that a load analysis is good sense.
