[SR-Users] q-value on unsupported clients

I have a need to use q-value for serial forking but my clients don't support it. I need to specify unique q-value on all ports on the client device. I explored using the User-Agent header and appending q-value, but this wouldn't help on multi-port clients. Some things I have been thinking about are 'abusing' the authorization user or from user to somehow append q-value but this opens the door to other issues, and a database trigger however there would be no way to match this up to a record in another table as the usernames would be the same. Any thoughts/ideas or methods others have used in situations like this? -Dan