Wide and uncompetitive spreads is the biggest negative. Don't imagine you'd change that! Design of platform is the second biggest negative. Silly things like when the cursor is over the buy or sell, a window pops up that says 'buy' or 'sell' accordingly. Why would you need that? Lots of little things like this that suggest the person designing the platform is not a regular user. The most negative design aspect to all the platforms, not just IG, is that the screen is full of information you don't need and cannot hide from view (space is at a premium and it's nice to see all info simultaneously). Apart from the charts what you need is just the ticker codes of say 100 instruments simultaneously on your screen (rather than IG's about 30). You don't need to be told that GSK is GlaxoSmithKline, that your list of instruments is a 'watchlist' (duh!) for example, waste of space and a distraction. The code should be bold and other than that just buy/sell boxes, the whole window taking up about 15mmx20mm rather than approx 2" X 3" minimum currently. Countless other improvement could be made, would be happy to provide examples but don't imagine you'd make the changes.