I was disappointed with the 24-70 f/4 IS as well.
Go and try one. In a couple of years time people will be raving about this lens. It's the 70-300L all over again.
Yeah that's what I've been saying. I won't be surprised if it is the 70-300L all over again. I learned my lesson on the 70-300L. When I heard the price and all I thought it was absurd and how could I ever replace my magical 70-200 f/4 IS with it, no way it could be close, how could they not include the tripod ring for the price, etc.
Well, a year later I tried the 70-300L and yeah it was the 70-200 f/4 IS that was the one that got sold.
(although, OK, I still hold to my tripod ring comments though)
I do think it will only become the 70-300L all over again if it keeps turning up on those $1025 deals though.
(also I do have to say the 24-70 II is not getting knocked by me here, that is one awesome lens, best in class across all makers, best AF too when used with a 5D3/1DX with their high precision engine ability)