There is no way to do this yet, but it’s on our wish list (exactly as you’ve described it) so hopefully you’ll be able to duplicate cards in the near future.
In the meantime, one workaround that I use a lot is to create a Child FLO with the cards I want to reuse (and you do not have to pay extra for child FLOs). A shortcut for creating the child FLO with the cards you already have is to duplicate the FLO, delete the event card and replace it with a child FLO event card, and then delete everything except the cards you want to reuse. Then you can use Call FLO cards to call the child FLO whenever you need those steps.
Azuqua Prod Mgr