Gyratory traffic schemes, extended one - way systems etc

Here's an updated plan for Parliament Square. This has been around in various forms for some years:

https://www.standard.co.uk/news/london/unveiled-scheme-to-end-racetrack-parliament-square-a4345296.html

I personally don't favour this approach, which is centred on creating a large pedestrian space outside Westminster Abbey. I completely understand why that is being proposed, but from a motor traffic management perspective I think it would be much better to pedestrianise the square's west side, with the carriageway on Great George Street (along the north side) de-emphasised and traffic along that alignment reduced, perhaps by partial filtering east of Horse Guards Road. This would lead to a standard T-junction outside Parliament for all traffic to/from Victoria Street, a much simpler layout.