I'd definitely read it, too. What I think would be useful is a simplified or more friendly presentation of all of the spindle length and assymmetry issues, in addition to a good presentation on taper and spindle/cup matching. Another open area is the assymmetries of cartridge BBs, and which ones are assymmetrical. Barnett's has a great procedure for determinimg the optimum JIS or other spindle to choose as a replacement, either as a wearout replacement, problem-solver, or a bike reconfiguration. If you can make all that stuff easier (and I don't think vids would help) without leaving out important stuff, that would be a great resource.