No, I'm afraid not—your control over which list is used is limited to when you create the card, by first defining which list cards get added to, but I'll make sure our team knows this is something you'd like to see in the future!
All of the Slack app commands are documented here, in case that's helpful: https://help.trello.com/article/1049-slack-app
If you had to thrive a new habit during a lockdown, what would it be? Trello
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