I presume this was moved out of the Champs forum? Can't think how I missed it otherwise.
It seems like a very good idea. My immediate thoughts turned to the junction of the clockwise M25 and A21
, where it looks like you may have been testing this.
In the 9 months I have been editing, I have seen URs here almost weekly for "wrong directions". As a noob, I didn't dare touch a motorway junction! By the time I felt experienced enough, there were already several fingers in the pie, so I watched the discussions from the sidelines. Well, it looks like the un-named segment went in at the end of January and I certainly haven't seen a UR there for a long time, so it appears to work nicely.
It should certainly by up for wider discussion - not least because I now realise I may have recently "fixed" several un-named segments between roundabouts without realising they were there for a reason!
I would suggest that any deliberately un-named segment like this should be locked, to try & prevent casual idiots like me coming along & re-naming them.
I'm going to give it a try myself: there's a double-mini roundabout at Brockely Cross near me. I know it gives some long-winded & occasionally confusing instructions, plus it's not well aligned to the GPS & aerials. I'm off to Scotland for a couple of weeks, but I'll make sure I test-drive the rebuild version when I get back.