I add my encouragement to add chord diagrams to the library, although it would need to be done such that using any of them would "define them in the song" so that they get included when sharing a song. I think this is especially important for ukulele, with just 4 strings it helps to customize fingerings a lot. Several of the most popular and great sounding inversions do not show up in standard libraries because they omit the root note, like 2020 for D7. Take a look for example at the implementation in the application "Songbook", which I use a lot.