It would be useful to be able to run show commands on (Juniper) devices and display the result the same way we display diffs (aggregated by devices).
Maybe with a timeout if there is none by default. For example doing a show route | no-more would take an eternity.
Similarly, beeing able to run clear commands would be useful (eg. clear counters).
And more risky, being able to run request commands, maybe with a whitelist to start with (eg. cleanup storage, save backup config, etc...).