I don't want to step on anyone's toes, especially not those of @Jan_Schreiber who does a great job with all his additions to the German LanguageTool. But I've noticed something that I'd like to discuss.
Jan does almost daily add words to the German spelling.txt that have been suggested by users of the LanguageTool website. I think that this is a really important task. But I've noticed that additions to the added.txt are made much less often. Many new words in spelling.txt are automatically recognized by the POS tagger because they are compounds. But in every batch Jan adds there are some words that don't have a POS tag (a recent example is the adjective "unflüssig").
I think that the grammar checking of LanguageTool is as important as the spell checking, maybe even more so. Therefore, adding words to the added.txt should have at least the same priority as adding them to the spelling.txt. I even think that we should add fewer words to the spell checker if that means that we have more time to also add them to the POS dictionary.
I know that this post might be a little impudent by someone who doesn't commit much more than three to four little things each month in comparison to the many hours others spend on improving LT. But now I've written it and am looking forward to your comments.