I think I might have been confused about what OP is looking for. They are looking for “Edit → Enlarge Selected track” and I thought they were talking about “Edit → Zoom → Zoom Selected Tracks”
In my post above I’m talking about “Edit → Zoom → Zoom Selected Tracks”. I am not quite sure, but that might be what OP is after in the first place, cause what you would do with this is select a track (or a group of tracks), then use a keyboard shortcut to trigger “zoom selected tracks” and it expands whatever tracks you have selected to about a midrange size. You hit that keyboard shortcut again and it collapses the tracks that you had enlarged. One thing to note about this method is that it makes all the other tracks pretty small, no matter what size they were set at before. But that is perfect for me, Im glad it does that. It makes it so that all the tracks in the season spend the majority of their time as a super super small track height by default, which I like. If I want to take a look at one, or two, or five, I select them, and then I hit the keyboard shortcut for “Zoom Selected Tracks”. When I’m done, I hit the keyboard shortcut and they collapse to the same tiny size as all the other tracks. If OP sees this it might be worth playing around with that one to see if they like it.
For anyone reading my above post looking for a better solution than the ones I provided in that post, I believe I just found the equivalent to “Edit → Zoom → Zoom Selected Tracks” in the shortcut menu. In the Keyboard Commands window it is called “Zoom - Zoom to Tracks Exclusive”. So that way you can assign it to any keyboard shortcut you want right inside of Cubase instead of needing to use MacOS or Autohotkey. I just found this shortcut item so I haven’t done extensive testing but so far it seems to do the exact same thing as “Xoom Selected Tracks”