Yes, this is a good idea. Then one can't miss any Pokemon found in the location if we have a dex like this.
Hm, would translating TVTOKYO previews help? Also, song lyrics? Do the English Pokemon episodes have ending songs, i.e. outros? If you meant the Japanese ones, we would need translations, I know many people who read Japanese lyrics want to know what they mean. Of course, we could point them to sites like Anime Lyrics dot Com. What comes to our own translators, I'm sorry, but it seems two our potential translators Murgatroyd and Zak are out of the game. Murg hasn't posted for ages and Zak doesn't seem interested. Of course I could step in, but I've tried translating Pokemon stuff before and have found it difficult. Perhaps I should try again now that I have knowledge and experience.