I think the braveheart should definitely be left as is.
If I was able to make a few changes to Nevis Range, it would be
A) to move the Great Glen Chairlift, with it facing uphill, its valley station located were it currently is, its top station below warrens T-bar.
Double up the summit button. I think a detachable poma might be better suited to this task so all the hangers are gathered in at night
C) Relocated Rob-Roy T-Bar to act as an exit lift for the back. The beginners have enough terrain anyway.
On a good note, I notice a lot of new snow fencing and depots of timber across the mountain this year. Nevis Range don't seem to publicise their on-going work schedule like Glencoe & CG.