The suspension configuration you have drawn has been used on Ford F series pickups and small trucks for over thirty years. Their name for it is "Twin I Beam".
Yes I'm aware of the twin I beam Fords but I originally got the idea from a pommy sports car but for the life I can't remember which one
The original Lotus clubman keeps coming to mind, however I doubt if this was it.
Personally, because I'm fully aware of it's drawbacks, I'd never use a setup like this. One thing that wasn't mentioned was the incredible amount of upsprung weight involved. That in it self would be enough to discount it.
Once you've designed and built your own IFS and you realise how easy and straightforward it really is and how well they perform, anything else is a compromise.
Now if only you could design an IFS that looks good in a fenderless rod?
These are my humble effort so far:
Long 2" OD tubular lower control arms attached to torsion bars (similar to Morris Marina).
Split radius rods acting as castor rods.
Chrome the arms and the rods so that they stand out.
Cortina or similar stub axles. (nice and compact)
Tubular upper A arms attached to cantilevered inboard shocks. Painted body colour to blend in.
Large dinner plate sized headlights to help hide the upper arms.
Another tack entirely would be to fabricate a two piece tube axle that has a sleeve joiner in the middle so the axle can twist freely but still has full beam strength. Check out the de Dion rear on a Rover.
Peter, I looked these up after you referred to them a while ago. A very interesting setup that needs to be explored further. However, didn't they use a spline on the de Dion tube to allow it to change track width with suspension travel? This would not allow the axle to swivel, which is what you'd want on a solid axle with split rods. Good concept tho.
BTW good to see you're still lurking around mate
I suppose if we keep getting all of these ideas, one day we will finally come up with the ultimate rod suspension.
I'll leave you with a quote from a famous French inventor, aviator philosopher and poet.
One many may hit the mark, another blunder; but heed not these distinctions. Only from the alliance of the one, working with and through the other, are great things born.
Antoine de Saint-Exupery 1900-1944