Well it's not a scale type as most wish for in this thread but I would love to see Hangar 9 or Great Planes release a decent sized Artistic Aerobatic type ARF. Something along the lines of the Seduction Freestyle or Quique's PL Prod Excellence, and between the two in size.
Maybe 65 inch span, 120 4 stroke range, 800-900 squares - swept LE pattern type wing, airfoiled tail surfaces, 6-7lbs weight, fixed gear, tail mounting for the servos from the box to minimize extra balance weight, and of course huge double beveled control surfaces all around. Give it a cool trim scheme, price it around $200-250 and I would buy two.