i'd only say that 7k2 is really a nice option to have. as is 400hz.
for vocals weather im boosting it to trigger a de-esser or boosting it to bring some life back to a de-essed vocal, 7k2 is my best buddy.
For the low band 400 is the right tonic on many many things. I love a dip on the kick at 400, and a push on the bass at the same.
hell looking at the 550b's now, someone had 400 shelved at+ 9db last night. wonder what thats all about,
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Other than those two small things, that looks like a very useful eq.
though is its not too hard, go 2nd order on the HPF... 1st is easier to do if you build it yourself, but second sounds way better in the end.. and maybe a lower point too, being the digital age I like to be able to use a HPF at a pretty low freq. say 38 or 45 AND 75.