“All good except the 90 degree fixing brackets. You have to fix the brackets first, then fit the light to the brackets. it's really awkward to get the lights to line up to join together. If only you could fit the brackets to the light first, you could then mark all the screw holes properly,. All they need to do is move the screw hole so it is accessible when the bracket is fitted to the light, it's that simple, obvioulsy the designer has never fitted these.
Also, to avoid waste, it might pay to offer the mains cables separately, like you do the joining cables. You get a mains cable with every light. We bought 11 lights and used 3 mains cables, so we threw 8 away, this way you could make the lights cheaper and buy how ever many mains cables you need, simples.”