I would like them to decide to either make everyone put a coin in for their trolley or no one, at the moment it can be dificult to return a trolley when ones without coins have just been dumped anywhere, resulting in having to re-arrange all the trolleys so you plug yours back in. Also in France bulky items, such as packs of water, they have the bar codes at the till points so you don't have to lift them onto the till and then back into the trolley again, it is a simple system that weems to work! Hope I'm not too late with these sugestions.