I'm with Tempforce all the way on this one. My first tractor - L185DT - also had no ROPS, safety switches, seat belts, interlocks, tail lights or turn indicators. It had a huge pucker factor, so I built my own 4-post ROPS. The backhoe tended to bleed down, so I welded some chain hooks high up on the ROPS to sling a chain around the boom and hold it up. The frame for its FEL swung across the front of the tractor, and blocked the lights. I cut out half-moons from it to make them functional. And I built dualies, not to be cool, but to gain floatation, traction and stability. For years I worried that the tractor wasn't designed for them, but they sure worked - and still do!
Tempforce made his tractor work better for him, and wanted to share the idea. I praise that. Maybe I'd have done it a bit differently, but maybe not. It works for him. Anything that makes it do our job better is a good idea.
As for the safety song, I have an L3200. Take a good look at how the seat belts are attached, then talk about engineering. Ask why Kubota would put tires on a tractor that then require wheel spacers to use chains in the winter. My tractor wouldn't fit through my standard garage door. Too tall. I have the canopy, so folding the ROPS was not an option; in truth, I'd never have put the ROPS up and down every time I wanted to take the tractor in or out of the barn anyway. So I cut about 3-1/2" off the top section of the ROPS. Is it any less safe? I don't plan on hiring kids to use the tractor, lend it to the neighbor, or sue Kubota if I happen to roll it.
I've seen less than charitable comments here on things that work well but may not look so good. I like what works well. Good job, Tempforce!