Hey AnnaHolder,
I manage the team at Adobe that delivers the service you are asking about. Yes, we do have this service. It is called Workfront System Admin (WSA) consulting. We also have a WSAF consulting service, which add Fusion consulting in as well.
With this service, a Workfront consultant partners with a customer's admin team to provide ongoing consulting in administrating their Workfront/Fusion system(s). This is a great service for customers who need help administrating their instance, whether do to a gap in expertise and/or bandwidth.
The best way to get pricing and additional information is to reach out to your account executive. Do you know who that is? Feel free to reach out to me directly at newbold@adobe.com and I can help get you in touch with your account team and we can discuss more details.