You mentioned this recipe here (Hum removal) but I can’t get it to work. Perhaps you could clarify in that topic.
There is another plug-in, similar to Regular Interval Labels that you may find useful: Beat Per Minute labels
So, lets say that you have 32 bars, and as you are using Regular Interval Labels I assume that the bar interval is exact.
You have 1 copy operation and 16 mix/paste operations.
I assume also that each 2 bar phrase is identical, otherwise the pasted “reverb” is not going to match the audio track that you are pasting into.
The way that I would approach the task would be to create 1 bar, complete with reverb, then use this “Looper” effect to generate all of the other bars: Nyquist Plug-in: THE KRONx ECHO LOOPER - #2 by steve (2 steps instead of 17).
There is also a “Metronome looper” that you may find interesting: Metronome looper
Even without using these plug-ins, I don’t see that pasting the “reverb” 16 times into the original track is much easier than pasting it 16 times into its own track. Having the reverb in a separate track has the advantage that you can see at a glance if you’ve made any mistakes when pasting. The “most” useful aspect to having the reverb in a separate track is that if, say you made a mistake on the 2nd paste but didn’t notice until 14 pastes later, you can go back and correct that one part without having to redo 15 paste operations.
Working with multiple tracks really is extremely useful once you’re familiar with it. If at any time you need to adjust one of the tracks in any way, you can do so. If the tracks are all mixed into one then you can’t.