Well, a lot of pilots build them that way. I used to until the last several years. We started using down thrust, and a lot of the hunting problems went away. Without having to use much, if any down elevator bias, the turns became more even between insides and outsides. we noticed that we were having a slight hesitation at the intersections of the eights. If we didn't anticipate, we wound up with a flat spot.
So trying to use logic, it was decided that if we made the stab and elevator the same width, we might get rid of that hesitation.
It seems to work.
The idea behind having a thinner elevator is to blanket the elevator a little, reducing its efficiency in level flight, and helping tame the hunting. Using down thrust helps offset the causetive problem that contributes a lot to hunting.
I prefer the downthrust solution, but use what floats your boat.