Basically what's said before were all true, but we need to add "perhaps", "maybe", "Who knows, maybe Sera IS someone's sister *laughs*" to every statement mentioned. (He said this because fans already kinda figured out the whole Gundam theme.)
It just means that Gosho is teasing us and did not actually reveal anything. Gosho's wish is to retire at Agasa's age, but he admits that it's just a dream for now.
What was probably not mentioned before is that each week, it costs 2.5~3 days for Gosho to think up names, 4~4.5 days for him to draw. He admits that there's no time for him to think up tricks (Whaaa!?). And when he was taking all those "info-gathering breaks", he was actually drawing promo pics for the movies or Conan relative stuff, or just slept all day.
That probably explains why some of his tricks are mediocre, erroneous, and not as interesting as when DC started. But hey, he did more work than I do
Finally, yes, DC will have a happy ending (we don't know when) and the lines were already decided. "Because it's my work!"
)
