My hat is off to you! The sheet stoppers really make it - selective windward sheeting with leech tension from the vang. All the benefits of a traveler with no traveler. Hope you don't mind if I 'borrow' some aspects of that for my Tartan 30? Your incorporation of the blocks into the handrail is a thing of beauty! My handrails are still 'woodies', so that is out for me. But some turning blocks just forward of the dodger are easy.
When I bought the boat, the traveler didn't travel - twas a short lived piece of junk. My initial rigging upgrades included a 12:1 Hall Spars QuickVang - it's power still scares me. That provided the leech tension I needed. A few years ago I installed a new Lewmar traveler system, giving me mainsail control to the max. But I've still got all this stuff rattling around the aft end of the cockpit - when I jibe, it's a matter of wondering what's going to snag on what. Clearing the cockpit would be delightful - might have to use my aft secondaries for the mainsheet??