Thanks for the super-quick reaction, I look forward to trying things out.
Right now, I think the new user interface has some problems when it comes to dealing with the situation where nothing is select. Various menu items then are still enabled that act on the selection. E.g. right now I could choose "Copy selected item(s)" and "Copy selected item UUID", but the only thin that is "selected" is "All Apps" in the left-side list of applications. Selecting either does not seem to copy anything. (Also note how the one says "item(s)", the other "item" -- not important, but still jarring to me. Any reason why those are not just named "Copy" and "Copy UUID"?
Likewise, when I configure triggers, then in both the list of "Groups & Top Level Triggers", and also of "Actions Assigned to Selected Trigger", I can always select the trash can button, even when there is no selection.
And if there is nothing selected in "Groups & Top Level Triggers", then I can still select the "Plus" button under the list of "Actions Assigned to Selected Trigger", which then does nothing... Or I can use the one inside the list, and that then indeed adds an "action", but not associated to any trigger, which is super confusing (because I tried to add an action to a trigger, but did not notice that I had not selected the trigger in the list, and weird things started to happen).
Another inconsistency: Removing things from the list of applications is done with a little minus "-" sign; for the other two lists, with a trash can; adding things for all three is done with a "+", though they look different for apps vs. the other two lists; and of course the order is different: for apps "-" is left of "+", in the other two lists, the trash can comes after the "+".
Also, the "+" for apps actually opens a popup menu with three choices (one of which has a submenu), while for triggers there are two "+" buttons.
Finally: Would it be possible to add a unified list of triggers? One where simply all types triggers are shown? Right now, if there is an app in my list of apps with triggers, and I want to remind myself which triggers I defined for it, I have to switch through all trigger types to find out. Why not show a single unified list, perhaps with two columns, one indicating the type? I am pretty sure I'd then only use that list view (esp. if I could "sort by type" in it).