This one has come up before... I'm definitely not opposed to it, I just haven't gotten to it yet.
Since it's come up again though, let me look into it and see what would be required. It might be easier than I'm thinking, especially since I've cleaned up the code a bit since the last time I looked, probably.
Going to give this a shot. Going to have to get a little creative on the UI front since using letters to select things normally imposes a 52 item limit and there are more than twice that many demons, and I'm also concerned about the lag time on loading up all the demons at once, but I think I have credible ideas on how to solve both now.
Oof. If I'd known what a pain this was going to be, I'd probably have not started it while on vacation, but it's getting there. Should be in the next build, though I don't promise it will be without mild performance issues on lower end machines. Then again, even Shin Megami Tensei IV: Apocalypse's compendium has some performance issues on my 3DS, so I'm not going to be toooo grumpy at myself over it.