Update for anyone who was curious about that last point: I figured out how to use the simulated annealing software on that website, which allows you to use a cu

Update for anyone who was curious about that last point: I figured out how to use the simulated annealing software on that website, which allows you to use a custom mask for the characters than can be swapped. On my very first run I got a result better than QGMLWB: in fact QGMLWB requires 2.5% more effort to type the training corpus than the one I generated. I bet a huge win would be moving the exclamation point, but I haven't figured out how to allow the program to remap shifted keys.