I think the tail length is fine iasgair. I would leave as is to see if it works. I wouldn’t have a problem using it for sea trout or salmon in coloured water.
Remove the wing altogether and it could be called the “queens guard”
Red winged Coachman tied loch style wet? I agree with reducing the tail for proportion. Not sure the fish would care mind. A darker wing would put that fly tied in smaller sizes in the chironomid/buzzer/midge box as a 'pulling fly' in a suitable hatch, for me at least. I like it