Well it seem from what I can tell most heads seem to fall in the 260-310 fps which from the sound of it is considered the acceptable velocity range. So basically you just got to match cfm/hp with the right cid/rpm which is basically how most do it, so for the most part unless your doing something special and or above 7,000 rpms it probably not a thing most got to worry about. Maybe the only thing that might hold the average guy back is possibly the push rod pinch which is ballpark cid x rpm / 1,100,000 = min csa which is usually the pinch.
I Totally agree, It's generally easier to make a bigger slightly less efficient engine for the power and rpm your after.