In terms of room design, neutral sound is the hardest (most expensive) to attain. Alternatively you can go for the "live/detailed" sound or the "warm/organic" sound with much less trouble.
But, AFA speakers go and AFA I'm concerned, neutrality has absolutely Nothing to do with a set of measurements. Neutrality is a subjective perception - nothing more. That's all it is and all it ever was.
A speaker in a room either sounds neutral or it doesn't. It can either be made to sound neutral in the room or it can't.