sorry bee boy i love the drawings,
i would have to chain my son and beat him with hot dogs for at least an hour to produce them. the main flaws are yes you can stand in front of a hive entrance but you dont want to, i laughed my socks off when someone has posted a picture of a bee club apiary with all the hives back to back, any one who does that should not be teaching others ever,
try this idea turn the two bee hive to face there side of the shed rather than the gable end and then move them more towards the side in that way you can stand behind them to work them to cover the front the two i would use is chicken wire or something mesh panels, bees fly through but any thing chucked at them will bounce off and you just have to make a false front on the end to hide the ladies,
the other option is to just make the shed three foot longer than planned and have them inside, just one question on my bee shed the flight path is designed to be the length of the allotment , some people have them set up to fly over a dead area like though the fence and over the railway line ect, if you cant do that with yours what you will have to do is like me now and that is to build a fence 6 foot high around 6 foot in front to force the ladies up wards