I do know what you mean by it sometimes feeling a little slow. I've gone head-first into automating a bunch of things in cubendo, and am surprised with how long some things take.
However, I've never seen *those* kinds of figures - but i understand it given your high number of tracks / folder tracks etc. Sounds like something in the code needs some serious revisiting.
Just some ideas of some of the things I do with macros.
I have one that takes imported audio and places them on their named tracks. It requires a separate PLE command for each track - but if say you've got a bunch of drum tracks (but not in the order they are in inside nuendo) then just drag them in any which way and it will copy them up to the correct track. Boom. (we actually use it for dialog editing for animation too - but thats another story!)
Frequently use PLE to rename tracks using the search and replace function. Not as a macro though.
Really quick one - play with preroll from the current selection
Oh a couple others in my list that look useful (I'm sorry if I'm repeating those that come with nuendo - other folk use this computer at times and I cant remember what is what! I'm just trying to find some uncomplicated ones)
So :
And (I think this might be one that comes with nuendo???)
Anyway - you can get WAY more complex...
So for example. Atmosphere editing. Once you've detected the cuts in your video (damn I love that feature) you can quickly make cycle markers from the normal markers. (Macro!)
I then go thru them and turn them into "scenes" - manually.
Then just wack your audio layers in for your atmospheres however you'd like.
I then have a macro that trims all tracks in my atmosphere folder to the bounds of the scene, extend by 1 frame either side, and put in a 1 frame fade on each audio file. Boom.
(I have another version that does 2 frames in / out as well - sometimes this feels better)
In our main room, the editor uses a macro where he hilights the audio where a breath is, and with one command it deletes it, and then edits the audio before and after with fades in / out to his liking.
He can debreath a voice read in the same time it takes to play it thru.
The fun really starts when you install some additional software. I use a streamdeck XL, and then have that control Keyboard Maestro. There are a bunch of things KM allows you to do that are not covered by key-commands in cubendo. Its a rabbit hole. But satisfying when you get things that work for YOUR workflow to really help you.
Examples : Changing the name of multiple tracks when PLE isn't powerful enough. (Search and replace only goes so far. KM allows you to use all sorts of tricks...