Recently I've tried to add several characters to my queue that were part of words I had already studied but hadn't studied the character individually (I think). I got the message saying that it wasn't added because that character was already being studied. I like the new message, but I think this might be a bug. (Or I have forgotten that all the ones I've tried to add are in fact already in there idividually). One example for me is 赋.
Also, it would be nice to be able to click on a word or character anywhere on skritter and add it to the queue. Like reviewing a word I've been having trouble on - click on the trouble character in the right pane to add it to the queue. Or looking at a list like the HSK one. I like to add sentences to Anki at the same time I add the word to skritter. It's hard to control at the list level, but copying words from the list to the queue is kinda time consuming.
Thanks!