Thanks for the feedback! Do you mean in the square itself or the possible guess words? Tried to calibrate the square itself for a good balance between challenge and reasonably common words.
That is fair! I feel like those should definitely be allowed. I am using a wordlist based on this: http://wordlist.aspell.net/12dicts-readme/ which is public domain and has about 6k 5-letter words, compared to the Wordles 12k. If anybody knows any other good royalty free wordlists I would definitely be interested. :)