I've never seen the velocity metrics be not useless, so I'd sacrifice those. Or people need to realize that yes, a team that also does support will have widely

I've never seen the velocity metrics be not useless, so I'd sacrifice those. Or people need to realize that yes, a team that also does support will have widely varying progress towards project goals depending on support work load, that's not a problem. Who really cares if a team "overdelivers" because they got less interruptions than expected?