Switching virtuals desktops has nice animations to visualize what is happening. Switching activities currently misses(?) any such effect, it would be great to have one here as well. No real proposal about a visualisation, perhaps the mental model is the same as for virtual desktops, a one-dimensional row, so simular effects would be useful.
moving to plasma - activities are managed by plasma not by kwin
*** Bug 265456 has been marked as a duplicate of this bug. ***
Sure, close 265456 which has more information and even some code in the works in some github repo. Just for the record, take a look at the comments in here: https://bugs.kde.org/show_bug.cgi?id=265456 (so it doesn't get lost)
(In reply to comment #3) > in here: https://bugs.kde.org/show_bug.cgi?id=265456 (so it doesn't get lost) It looks like the code already got lost. Closing as duplicate of 261194 that has developer comments. *** This bug has been marked as a duplicate of bug 261194 ***