To me, redundancy is one of the best aspects of a double bridge. Are you saying it defeats the purpose of having two fully separate anchor points? I can still clip a carabiner direct to the minor bridge if I want to distribute forces that way. I personally have a fairly short torso and I hate excessive clutter around the bridge. I’m not that interested in having a second bridge ring floating around all of the time, especially since I still use my side and low d’s a lot.
I think the bridge is a weak link in the climbing system, and also very close to where a lot of cutting happens. I wanted a system that’s tidy, compact and provides a backup to my primary attachment point in all situations. I was trying to run just an anchor ring on the primary bridge, then have a revolver carabiner attaches to the ring that also captured the secondary bridge. However, having the revolver there didn’t meet my tidy criteria.