Sorry for the confusing reply
My comment "yes it does" was in response to your last line quoted below,
ie. Can an ongoing base action for the tricksters still apply even if there are no tricksters on the base?
But it looks like you answered your own question pretty much in your last post
If there's nothing on the card that says a minion has to be present at the base where that ongoing base action is played, then I don't believe there's any reason you wouldn't be allowed to have that card played on base without your minions being there.