If it's a 50 or 55 I don't care about, but if Canon decided to make a 50mm f1.4 L and it was the size and weight of the 85 1.2 I don't care. I care about them matching the Zeiss f1.4 (which is VERY high up on my list now as I love 50mm) with the AF of the current 50 L.
Canon needs a good 50. Seeing the samples from the Zeiss makes me very excited about it, can I live with MF? Not so sure, I mean, I can shoot a lot with a 50(55) mf, but there's a lot of things I would love to shoot with that IQ, but needing AF.
And to own both the 50 L and the Zeiss 55 f1.4 is an option, but not when I also want a 24-70, since I don't cr@p money...