Those are some nice zig-zags! The Bushman's Neck area lends itself particularly well for that, though my own version is less impressive.
Had a particularly interesting 4 days at Giant's Castle once in mid-winter involving Giants Pass, Bannerman Pass and Judges Pass. It was improvised because we got so badly battered by a particularly vicious wind at Makhaza: tents got damaged, equipment was blown away, had to yell into each other's ears, and simply could'nt function properly. Four people, who thought they had seen it all, quickly retreated back down Giants Pass and traversed across to Bannerman Hut to do the other 2 passes.
You would have thought that we should have known better after the warning lecture we got at the reception before we headed out, in addition to the big branches we had to drag off the road on the way in! The following 2 nights in Bannerman Hut were very snug though.
I'm going back for some more zig-zags in the Giants area, but since it involves undocumented passes that I'm not even sure about, better to wait till I've done it before writing about it.
The Didima and Yodler's Cascades area is a quiet little treasure that not many get to. It can be accessed from Monk's Cowl via Gray's Pass or from Cathedral Peal via Organ Pipes, Thuthumi or Tlanyaku Passes. It is possible to do a 4 day loop through the area, as I'm about to do this week, involving Thuthumi and Tlanyaku Passes and Didima Cave. The best is to have 5 days which will give time to enjoy seldom seen views, some of SA's highest peaks and several swims in the pools in the Cascades.
So, not to mention the Bell Traverse and Northern Berg mini-traverse classics, my nomination would be a 4-5 day loop through the Didima area.