I know this request won't affect all customers, but I'm guessing many agencies and consultants like me would appreciate something like this. I currently have access to 4 different Omniture implementations, and that is likely to increase. It would make things a lot more efficient if I didn't have to change out the company name and user name each time I switch accounts (right now I'm just using a different browser for each, but I'm going to start running out of browsers pretty soon!).
If there was a unique URL associated with each company login, then I could bookmark them all in a single browser and have my credentials saved for each. For me this would be a nice to have feature.