UnkleV, thank you for posting this. I was getting ready to see if anyone else had come across it and I am glad that others have. Miura's passing is still very raw for me and I'm slowly getting through this short interview with him. You're right, he seems so happy, so humble... When he referred to his style of manga as more "old style", while still paying respects to his contemporaries, it made me miss him even more. I'll return to your post once I finish watching the whole thing.
Update: Okay, I finished it. Well, considering Miura's estimate for where the story was at the time the interview was conducted, it is safe to say that he was hard at work on wrapping up this latest arc. While I don't doubt now that Griffith and Guts were to meet where they did, I know that he would have depicted the events in a much more epic fashion that would have been encapsulated by his impeccable style and attention to detail. In this regard, I believe Mori has not done wrong by his long-time friend.
The tidbit toward the end about giving us the backstory to Skullknight was, perhaps, one of the hardest things to process for me because it was already hinted at in 362. To have received an elaboration of this character and events would have been something to behold. There has been so much speculation about Skullknight's backstory that this would have been amazing. Given that the Old God Hand members look nothing like the current ones, my head cannon says that Skullknight has been engaged in a campaign of extermination against the God Hand after the events we see in 362. I would much rather get an outline of his planned events than to see this drawn... unless very detailed instructions were left behind or something.
All in all, I am thankful for this interview. Most of all, I am thankful to have gotten to see him so happy. Miura's creation has been in my life for nearly 20 years and it has helped me out of some really difficult times. While there is no undoing what happened to him, I will forever be thankful that we got to see a story as rich as Berserk in our lifetimes. We are truly fortunate.