not last login. Anyone can just login to keep the team "live" but if you're logged out, you can't do anything. So, the last transaction should be what is looked at to determine if a team is dead.
The Delta Premier is almost 50% dead! Look at this division...Deceptions-dead. Giants-dead. Suds-dead. I know the Suds logged in 4 hours ago, but look at transactions! Nothing in 10 months! This is why dead team purging should be based on transaction