I drilled the holes, added bushings, and ran a string up there (and anchored it at each end) in case I ever want to pull wires through someday. My strobes will go on the rudder so I'm not really sure what I would do up there*, but I figure there's no harm in having options.
(* When I first started building, my goal was to light myself up like a 747 on final...I even thought about putting lights in to flood the tail as the big boys apparently do)