Pathfinders based on a beam signal from the ground would suffer with the same range problems as just bombing from the beam, since the curvature of the earth allows only "so" much range.
Anyway, I would put my vote to the Mossie. Fighter, Attacker, Bomber, Night Fighter both offensive (intruder) and defensive , pathfinder, Recce, Transport/Special ops (Yes, VIP passenger room in the bomb-bay). Although the JU-88 was good and a torp-hauler as well, it would not hold up with the Mossie in some other roles. Anything could be Recce, but the Mossie was better than most at it.
Someone mentioned the Spitfire. Sort of good, - it was designed as a defensive fighter with short legs and good altitude performance, but ended up with features as long range recce, attacker, high-alt superiority fighter, offensive fighter, carrier borne fighter, and...the beauty queen of the lot
