Ah yes. Sorry Hawairish for not crediting you directly.
Over in the other thread less brake fade is mentioned as well as better holding power for easing down obstacles off-road which is an improvement, but I didn't see much else as far as improvements go that would pertain to my specific needs. I was after more stopping power for larger tires which I am sure discs help with, but I don't edge over rock ledges as much as I slide/roll down muddy hills or need to stop a heavy trailer.
Long story short, I was too lazy to do the swap myself and did not see enough gains to warrant my time and money. Maybe I am just justifying my own laziness.
If I do not get rid of this vehicle in the next couple years I am sure I will attempt your build or something like it. I frequently find myself reading over that post and thinking "One day.... One day I will have 4 wheel discs on my r50 and it will be perfect..."