These are the features I constantly wish OpenLP had, particularly with the song/custom slide text editor, it can get confusing using formatting tags, particularly if we want this to be more friendly for less tech literate people. It would be nice to see a preview of what was actually happening. In addition to this, I'm sent text for the service in word documents, I would like to be able to paste it in to OpenLP retaining some of the formatting like bold text rather than having to add it again.
I also would like to be able to set a background image without having to create hundreds of themes..
At the moment, because of these things, I mainly use OpenLP for songs and readings, for any custom stuff I create the slides in powerpoint and save them as JPEGS.