Yes, the "cool factor" is one good thing, another is the way you can build a plane to be much better in terms of aerodynamic cleanliness, strength and performance than what you can buy- usually. Personally, I like to laminate curved stab and rudder outlines instead of using heavy solid blocks, taper my spars, and make them one continuous piece to avoid weak points such as our almost universal but expedient practice of building the wing in two halves joined by plywood dihedral braces. Also, thin trailing edges are better than thick- they're less draggy, and improve the precision of control, and coved control surface joints have the same two advantages. Paul