I think most people tend to go with the hand that has the most experience holding and stabilizing the cube; not a huge mystery.
1.) OH with left, write with right.
2.) No
3.) No, Petrus
Really cool BLD autopsy method! It's like turning your cube inside out. As far as setup move errors, I think since the "inversion" is based on what you memorized, setup move errors(along with everything affected by those errors) would be smeared across the cube when applying [[(DNF)]']^2, since...
I think it is safe to say that more people get better faster with CFOP.
as in, CFOP users have higher |dAVG|/dt for longer periods of time than users of other methods (especially through the 20-10 seconds range where it counts the most).
I think it's 2 consecutive corner stickers always going either CW or CCW as a convention.
I would come up with an association system for edges and corners if you want to practice BLD seriously. Letters works well for both especially when you pair 2 of them.
I don't see any reason to practice going slow for BLD.
In speedcubing, the idea is to turn slow enough to allow you to find pieces for the next step. This has no context in BLD cubing since you're never looking and turning at the same time. For memo, as Chris pointed out, the faster you...