We're planning a bathroom remodel, and it looks like the best way to arrange things (since we can't move walls) has the hot & cold supply plus the shower head piping, on an outside wall.

The wall is 2x6, and we will have full access to it to insulate between the sheathing and the pipes.

Other than the obvious problem of access if there is work that needs to be done, does anyone think this is really a bad idea?