I don't agree with your view of support. I worked mostly on projects for many years, but always managed to do some support as well. Apart from helping people who would have been helped much more slowly (if at all) by the formal processes it gave me the following benefits. 1. A better understanding of what is really going on in the user community 2. Often, a problem / investigation is also a learning experience 3. It widened my contacts within the business so whenever I needed help from someone in country X or function Y, I had a good chance of finding it quickly and easily. So by all means work mainly on projects, but never give up support completely.
Roger