My ideal episode is something different, something unlike usual Doctor Who. I had this one idea where the Doctor is working with some Judoon to find and apprehend Davros. So, of course, Davros sends out the troops. The Doctor calculates that if the trajectory is right, the Judoon leader, Varlese, can ram one of the Daleks over. Varlese successfully does so. All the while, the Dalek in question's screaming, "BALANCE HAS BEEN LOST! BALANCE HAS BEEN LOST! ELEVATE! ELEVAAAAATE!" Weeeeell, it elevates alright, right into an elderberry tree.
Loved your theme by the way, Mr. Glynn! It's my favorite.
~TFTID