Fast 3D Printers
CoreXY appears to work very well. This is one of the fastest printers out there:
https://www.youtube.com/watch?v=0K9NM08S0IA
Speedboat Race is a good idea - a collaborative effort to improve print speed. It misses the indistrial productivity on a small scale specification of OSE, as it allows for max 0.5 mm nozzles.
https://all3dp.com/2/3d-printing-speed-speedboat-race-3dbenchy/