When it comes to relationships with your partners, it is important to build a web of relationships at all levels within the partner organisation, not only by yourself, but with many others in your company. Rather than being the star soloist, aim to be the conductor of your own orchestra.
Some vendors have them, some don't. When done correctly they can be a powerful force for both the vendor and the partners. When done poorly, or for the wrong reasons, they can be an absolute waste of time, and actually damage relationships. If you have an Advisory Council, or are considering implementing one, this article may be of interest.