Now I'm slightly confused. There is a a restart level hotkey, I might have misunderstood you, are you asking for a restart game hotkey as well? :-)
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Ah, sorry, I was confused because that's exactly how the existing "double tap p" mechanism already works, but you're saying that with that in place the danger of placing it on 'r' should be minimal. It's a good point... I'll consider making the change. Thanks for helping out, I really appreciate it!