We certainly want to make it easier to copy and paste frames in future, yes. It’s a bit of a fiddly process at the moment.
You can do it by selecting the frames you want to duplicate, then right-clicking on the same page in the Pages panel on the right-hand side and choosing Copy Selected Frames to Selected Pages. The pasted frames will be directly on top of the existing ones, so you’ll have a bit of fun trying to separate them.
Here is the relevant page in the manual as well – the only caveat is you can’t copy frames to the same page when editing page templates, they can only copy frames left-to-right or vice versa.