I make separate templates because a lot of the time, I end up reusing them or needing to quickly find them, and trying to root through a raw file that's cluttered with all that stuff just seems annoying. I'd rather have several files than one clunky file.
Congrats on derailing the topic, btw. I finally feel like a real member, now that I've had a topic get derailed.
In other news, I updated. Mewtwo's slightly less omnipotent now, though he'll still wreck pretty much any single enemy. Protip: If you're fighting him in adventure mode, go for the necks, particularly the main one. If you manage to get a solid shot in on his main neck and break it, he's pretty much helpless for a few days (until his Recover interaction kicks in), giving you plenty of time to go to town. ...Well, provided he doesn't nail you with telekinesis. Seems like breaking the neck disables that, though. And I made it so that you can explicitly target the necks, instead of having to hope for damage to happen by luck. Also, don't forget that he's not immune to traps, though I dunno how effective offensive traps would be. Your best bet is probably a cage trap, which you can then encase in walls/a ceiling for all eternity. Preferably with windows to display your live trophy. Or, if you're feeling vengeful or less dwarfy, toss the cage under a cave-in.