I've been having tons of fun on the test server thanks to PSM3 and it's gotten me thinking about what else could be done. No idea how easy or difficult any of these ideas would be to implement, but:
-SPAWN [number] [enemy type] command with a 30 second cooldown that summons 1-4 like-level bandits/Grimswarm/OSA enemy types. This would be just to have a steady stream of enemies for combat testing.
-INVOKER command that does the invoker effect on you. Or just leave the invoker there; either way.
-FIXSTATS command. Adds 1 use of fixstats at the inn. I've talked several friends through using fixstats live who were scared they'd screw up an expensive purchase (even if the expense was in bounty points).
-WEEKLY BOOST that adds 50,000 points for enchanting/ensorcelling/loresong unlocking/tattooing. This would mostly be for toying around with ensorcelling since it has the most moving parts (value proposition of the stamina restoration aspect just changed with PSM3...), and later resist adding, sanctifying, and warrior WPS since those will be new and people will want to get a feel for difficulties and benefits.
(For me, the moment I realized I wanted this was while testing Volley and noticing I had no idea whether it could trigger Ensorcell flares, but didn't have enough energy to T1 my bow to find out...)