All operations like copy, cut pase and also something like undo is definitely something I want to achieve at some point, but a little tricky to implement and something I wil need to think about.
Card presets sound interesting, I will add it to the roadmap too and see if I can come up with a good integration, but implementing this won't be a priority.
Full RGB colors for cards should be very doable but needs a little trick with the text color so there's no contrast issues - will add this to my todos.
Lastly, labels are also a high priority and I will add a separate point to my todos.
Thanks again for your request, these are good suggestions and when I resume actual feature development I will certainly look into trying to add some of them.
Copy, cut and pasting a Card, making a preset template for a Card with Tasks, full RGB coloring for a card. Also, a labeling kind of thing?