Today, you configure maintenance tasks under the administration workspace in the console. To see the results and details around those tasks, you have to go into the component status and parse through the SMS_DATABASE_NOTIFICATION_MONITOR to see when tasks started, stopped, how many records were cleaned, or whether the task failed, or, you can run a query directly against the database that shows when the tasks last started/stopped....but even then the task names in the DB don't necessarily match the names in the console. I propose that there is an area in Monitoring workspace that shows the status for each task, for each site:
enabled/disabled
scheduled start window
last start/end
last result
result details (ie removed 1234 obsolete records).