Combining both of these into one team is a terrible idea rotten to its core. This is because the pathway to excellence of one leads to mediocrity in the other.

Combining both of these into one team is a terrible idea rotten to its core. This is because the pathway to excellence of one leads to mediocrity in the other. Sprint tickets require an internal orientation, focused work, and blocked-out time. Support tickets require customer orientation, fast response time, and high availability. If you require your developers to be responsive to customers' needs, they will never have time to do sprint work. If you require them to have excellence in sprint work, they will not be responsive to customers. There is no way to "time box" these matters, i.e. devote a certain number of hours for this for a certain number of hours for that, because excellence cannot be time boxed. Excellence requires you to do whatever is necessary to achieve it. And these two types of excellence cancel each other out and nullify each other.