Dear Pramit Sen,
If I may put forward my idea of a career path/planning for the sales force, I would say it should not be radically different from the general pool of staff. However, some basic things have to be emphasized, for instance, but not limited to the following:
1. Qualification of Individual Employee in the Team
2. Number of Years Spent in the Company
3. Level of Productivity - Sales Target Achievement
4. How Effective as a Team Player - Appraisal Issue
5. How Proactive in the Marketplace - SWOT Analysis
6. Level of Inventory/Stock Control and Management
7. Ability to Improve Self on the Job
In addition, it should be noted that for this kind of team, management should always find ways of motivating them when sales targets are met and even surpassed through means such as sales commission, product hampers, etc.
Hope these tips will initiate some policy formation for you and your company in general.
Cheers, my friend.
Afolabi Ajayi