I like the idea of an osu! keyboard but as I have mentioned in the past, Cherry MX switches are made for typing, not to withstand the force of a 240 BPM beatmap play. Arcade microswitches are, and those should be used instead. Only problem with arcade microswitches is that I don't think they have any sort of tactile feedback like blue/brown/clears have, but they make up for it by being much more precise.