I have a feeling that the new album will be more raw/heavy and direct. Less synths and guitar melodies and solos but more aggressive guitars like F(R)iend. They will try to make a point to people.
There is no way they are going to go with less synths. Even Whoracle had synths and they did not miss an opportunity to throw some electronics in all of their later albums as well. But I think it's a cool, signature part of IF's sounding. Not sure who came out with the synth melodies, like the famous Alias one, but kudos to him/her.
I am cautiously optimistic about the upcoming album.
When STYE was about to come out the producer for R2R, Daniel...Bergstrand(?), openly called his work for R2R not good and was like "don't worry, I did a much better job this time" or something. When CC came out one of the bandmembers said "we thought we should bring the guitars back". And what followed ASOP, to me the blandest IF album ever was SOAPF, in my opinion definitely the best one since Clayman. So the new album being more aggressive again wouldn't be the first time IF learning from their "mistakes". Of course the pivotal question is whether they consider Siren Charms a "mistake" or not.
I mean, what was your point there exactly? R2R is the band's (commercially) most successfull record and as for STYE, I feel like I'm the only one here who likes that album and not just part of it. I wouldn't be surprised if some people would rate STYE below ASOP. So, yeah, you really can't base anything on interviews.
To me though, it's not a question whether the new record will be more agressive than SC or not. I pretty much take it for granted. If the band didn't feel like they could put together a new album, then they would just tour one more year.
I like good choruses with complex and simple structures. What I mean is that I like diversity. All the song structures from the last albums look the same, with some variations here and there. The only song that had something different was the Chose Pesimist.
What do we mean by diversity exactly? Yes, TCP has a weird ass song structure, takes power ballad to a whole new level, which is really strange from a band which pretty much only made ~4 minutes long songs. But I think it's unfair to expect any band to come up with brand new song structures. The classic song structure most of the bands use for 95% of the time works for a reason. It's much easier to show something new musically, and you can't say they did not do that. I was the one who actually got lectured that Through Oblivion is an entirely new type of IF song, because it's not comparable to ballad songs like CC or Liberation. Yes, now you'd say "but TO is fucking shit", but isn't that besides the point? I'd start to worry for a band more if they don't do anything new, than if they were to experiment on 1 or 2 songs which doesn't turn out that great.
Filtered Truth also had a very strange, non-traditional (well, I guess non-traditional can mean many things when we talk about IF) IF sounding.
Anyway, if I were you, I'd be optimistic, because it's mainly on Björn how the guitars will eventually turn out, and now he had two projects where he was pretty much the "head" when it came to managing the instruments, so the more experienced he is in this regard, the better he should be able to come up with. Obviously nothing will stand in the way of the "Anders-factor", which means the songs will still revolve around his singing, his melodies, his choruses, but those who couldn't bear that kind of IF has probably jumped ship after R2R.