I've gathered and translated the questions on the spoiler box below:
A: W-well... You're right. It's a complicated topic... Well... Hum... It feels a bit ankward that it doesn't close somewhat but...
Maybe I'll change it someday, or so I think from time to time... Sorry.
Q: Volume 85, when Bourbon and Vermouth are talking about how Gin suspects spies are getting in: is that foreshadowing?
A: Foreshadowing, huh. Well... Yes, it is. This year's movie will be more or less about that so...
Q: Well... Someone asked to me ask this but... Kir, Bourbon, Cherry (guess he meant to say Sherry), their eyes turn into foreigners when BO mode: are they mixed race?
A: Ah... No, nott really. When Conan gets surprised he also gets foreigner-like eyes so... I draw them like that when I want to portray scared eyes: there's no special meaning to them. Sorry.
But they maybe (some odd word: apparently Gosho can't come up with the word he wants to use) half, even.
(According to the person who wrote this it might be that he was trying to think of alternative word to "half", another way to tell mixed race characters apart)
Q: Now... This year's film "The Darknest Nightmare": what color feelings do you think we should give to this pitch black movie? What's the fitting color in your opinion?
A: Huh! That's a bit dangerous (in the sense that he has to avoid spoilers). Hum... Well, I guess each viewer should choose their own color... I think. It's a bit hard to say. Sorry.
Q: Volume 88. Sato's flashy outfit: are those plain clothes? In the same volume: Takagi Wataru is wearing flashy too but has his police notebook got downgraded to senior policeman, did you know?
He should be a police sergeant but both the Shonen Sunday chapter and the volume chapter read "senior policeman".
A: It got mistaken with police sergeant. Sorry, I meant, he IS a police sergeant.
And... Maybe Sato's plain clothes were borrowed frum Yumi?
Incidentally, the next case involves Yumi and Sato... Well... That's... It begins with a scene having the 2 of them walking in front of Shinjuku's Alta. (Fashion store in Tokyo)
Chuukichi also shows up.
Q: Is there a "fake" (a red herring) in the manga that no-one's noticed yet?
A: Ah... Huh... There is. No-one's noticed it yet. It'll soon be reffered to. In Volume 18 (speculated to be the APTX victim list and the "Haneda" name there)
Q: Eh... I think that there might be people like Amuro or Akai from the PSB or the FBI sneaking int the BO but...
Could there be the inverse, that BO are sneaking into Japanese police or FBI or in Conan's surroundings?
A: Ah... You bring up a painful topic... (Might be his way of saying: "I won't tell you")
Q: Could they be inside of characters who've already shown up or will show up in the future?
A: That's... welll... No comment. Please switch question topic.
Q: Also... Maybe you can't tell us but... Who's the girl that Sera's hiding?
A: I can't say that but... Really. Are there no other topics?
Q: Also... Maybe you can't tell us but... Is Vermouth an ally?
A: Huh? I can't say that. Really. An ally? (Looks troubled). Are you finished?
Q: Vermouth and Shinichi's mom knew other as fellow actresses but... Both know a lot about each other and seem to get along pretty well but...
How should I put it like...? How well do they get along?
A: Well... They're both actresses.
Q: I meant: how do they get along about how they know a lot about each other?
A: Not really.
Q: Please give us a hint regarding what you've said about that of Volume 18 no-one knows about!
A: You bring it up...? Why...? I'm saying no-one knows it... Hmmmm...
Well... You could say that someone might show up... When you see their name you'll go "Really?" or something like that...
Hmmm... Sheesh. Let's leave it at there. You'll enjoy it when you read it so look forward to it.
Q: Is there someone, some character that proved to be very hard to draw or think of?
A: Ah. Hmmm... Huh... Not sure... Akai or Gin, maybe. I wanted them to be cool and scary at the same time and it proved to be hard to.
The conté crayons I drew recently ago needed several redos.... It was rather... Hum... Somewhat... Let's leave it at there.
If I go I might end up spoilering something so.
(Gosho) President: I don't have much time to fix these... (President?) It's a bit wrong... (Gosho) What's a bit wrong?
Yeah. You see, it became like a hoodlum, even. Felt like behaving like Gin, even.
Q: What's with Ran's hairstyle?
A: Ah. Sorry. That must be it... T-that's, well, ended up like that, I guess. Hmmm... I wanted it to be a hairstyle with style so... I went with that symbol... Or, rather...
... Make it so that you can tell it's Ran even from a distance. Like when she's in the midst of a crowd... So that's why I made it like that. Sorry.
More like AstroBoy's angel head.