I would love to see manuals or more info on the instruction and help pages about the specifics of each item. For example, you have to search the forum to learn what size graphics are needed in some themes. Some instructions don't appear to work, and forum support contradicts some instructions. Some questions get asked all the time which annoys some people, but it seems like if that is the case, then having the information on the theme or plugin page would be helpful.
The other option is to have more support staff. No one is available when I need help which means I need to use the forums which can take days sometimes to get help.
I just find it frustrating to have difficulty with something and I can't get it solved very easily sometimes.