-SRW respects the source material, but Fate seems to have cases where characters are nothing like the source, like having lion heads. Is there a policy or way of thinking applied here?
Nasu: It's all having fun with broad interpretations. For example, in the myth, we have just two lines: "Cuck Wholain's has a spear named Gay Borg. It always pierces his enemy's heart and makes it burst". This means that we can interpret these two lines however we want. That's why I was always against turning figures from more recent times into servants, because they're more firmly recorded in history. But the number of servants in FGO has grown so much that we're breaking that taboo. Meanwhile, mythology is really just lines of "settings" which we can broadly interpret. I figured that these leaps of logic would be great stimulus for users. Eventually "I would never have thought of that" and "I thought of that too" spread out and users can play at making up their own servants. I don't think we're really breaking the characters, but taking simple lines from mythology and giving you a presentation saying "wouldn't it be fun if you could take this to mean this". And no matter how minor a hero is, we don't forget to respect them. The core is that they were someone worthy of being spoken of to this day, and we have them act as heroes within that boundary.
-You mentioned things you decided not to do in SRW like having Mazinger using Gundam weapons. What else is there?
Terada: Having pilots swap over to other series is difficult too. If asked if Amuro Ray could pilot Mazinger Z,I'd have to say that since Amuro is great at piloting humanoid weapons, he certainly would. But if asked if that's a wall we should break, I'd be lost for an answer. It would be really fun if we could do it. If all sorts of different people could pilot the Getter Robo's Eagle, Jaguar and Bear, of course it'd be really fun.
Nasu: Amuro, Char and Hamaan in the Get Machines would absolutely be fun!
Terada: You could also consider whether to play that straight or as a joke. For example if there was a serious situation where those three just happened to have no choice but to pilot the Getter Robo, I think people would be alright with it. But it'd be difficult to figure whether or not Char and Hamaan should yell "open get" when it splits up. I want to have them yell it, at least.
Nasu: If it's done that well, I'd say it'd be totally fine to have it for one stage or something. But even if it's done that well, if the source owners say no then the efforts of the staff are all wasted, so I guess it's hard to take that step.
Terada: We can't break the source material without the permission of the source material's stuff. I only met Anno once, twenty years ago, but when that happened he said he had two things to ask for me. The first was to put Char in an Evangelion, but I replied "I thought you have to be under 14 to pilot an Evangelion" and he went "Oh!". The second was to have Bright punch Shinji, and this we actually did in SRWF. Shinji says "not even my dad hit me before!" and Amuro looks uncomfortable. If we didn't have permission from Anno we couldn't have done that. Some think we ought to remove this limitation, but I've been protecting this line for the last 25 years. These aren't our series.
Nasu: It's like having a cake and not being able to eat it.
Terada: The Getter Robo thing from just now, I think if we really made it it'd be great. But there are other crossovers that I think went really well without going that far. For example, having everyone show up to save Asuka when she's being beaten by the mass production Evangelions in Alpha was something I wanted to do from the beginning, because when I watched the movie I kept hoping someone would show up to save her. But that too changes the flow of the source material so I was really conflicted about it.