Now with several grows, MC vers. 2 looks to be about as good as base nutes can get. At 4.25 g/gallon from about 2 weeks to harvest, plus 1/2-dose P-K boosters (which out of laziness, all plants get, including in veg.), I'm seeing good healthy plants from start to finish. I've even stopped adding cal-mag supplements.
If anything, the plants are taking weeks longer and keeping much more green right up to harvest (I don't do the pre-harvest starving of nutes that many do). I presume this is good, desirable - plants are healthier, presumably making resin for a longer period.
I see no reason to change MC. I've seen no problems with N. If you see a need to increase N uptake (why else consider EDTA?), maybe consider different Ca salts, such as perhaps more calcium nitrate rather then calcium carbonate.