Closing Active Connections sooner for maintenance

I've come up with two alternative iRules and something else entirely;

1) Reselect a different pool member. This should work and not pick another member that is disabled (as only the fact the connection is existing or persisted kept it on a down member) but there's a chance a loop could occur;

when LB_SELECTED {
 switch [LB::status] {
 "session_disabled" -
"down" {
[LB::reselect]
return }
default { }
}
}

3) Configure the Pool Action on Service Down setting as Reject or Reselect. I'd prefer this over either iRule.