I'd say the first thing is workman like? Not the neatest thing ever. But not sure its that bad.
The split bolt on the grounds is kind of unusual? Don't see the point of it. Why not use a wire nut?
I don't see any problem with the friction tape on the neutral unless one feels it reidentifies it??
I can't imagine anyone getting to upset about the outer jacket being too long or the fact the wires run up into the corner.
Not sure why 15amp recepts are a problem.