r/ffxiv has translated the interviewgiven during the fanfest. Some of the question have been partially discussed over the last days, as Dengeki and Famitsu published it, but
here is the full transcript.
Question 15 is particularly interesting. It seems to imply that the trial series will be back as its own entity. If that's what it mean, this is huge. That would mean that we'll get at least one true FFXIV side story, but also that they'll unbloat the patches storyline. Being forced to have a dungeon AND and trial made the whole storytelling stiff, with some dungeon being useless filler (isle of Haam being one of the worst, it's the dungeon where you go for a fuel run. The one before Zelenia, while not as bad and good fanservice, is still basically useless). So if trial series are back, I'm all for it. (I'm even for them not being limited to trials, but swap dungeon and trials between the series and the msq depending of the need. You could have 2 trial and a dungeon in the serie, for example). If that's what it means, the place of this announcement was in the keynote.
Now for the "all of the crossover content are integrated in a manner that is based on the world view of FFXIV" part, I'm still unconvinced. You can do all the efforts you want, you're not gonna do an Eva crossover without showing an Eva. FFVII has more chances to be integrates (as city of 9th, for example), if they do something similar to what they did with Fran, but overall, I'm not convinced.
Q14 mentionned that fierce is aimed to bridge the gap between normal and extreme. Yoshi-P said "this will mean it’s designed so that players can take on the challenge after witnessing the base mechanics in Normal", which sound good. Since they announced that new difficulty level, may fear has been that it needs PF and organisation, and if that's the case, I think Fierce will be a failure, because it would just be "another content that needs PF/discord to run", and I don't think that's what most FFXIV players are asking.
But this question also show that SE sees midcore content as a difficulty level (interview litterally call it that, saying FFXIV didn't have midcore content until now - which should end the extreme is midcore content debate, for SE it's high end). This is not a good sign. I think midcore is more about investment and accessibility (that's I tend to see relics up until ShB as midcore content as long as you decide to make many of them), and difficulty is only one of the tools to make that. But overall, I'm slightly relieved about fierce.