Improving off-the-shelf bird feeding hardware is a good way to get better bird feeding results and attract more species. They key to this is observation. No two gardens are the same and your birds may well prefer to feed on a different shape perch (see perch rings) or they might prefer a wider tray to perch on.
We have space saving devices, too, such as the Superlink Feeder Hook which can be screwed into the base of some of our bird feeders to provide extra hanging space. See this as a department to help you make the best (and safest!) bird feeding station in town.