I agree in general especially because right now if the perk leaks are even close to 1:1 to what happens this will probably be one of the best ntr games ever made just in terms of story and corruption alone. I think the main reason for speculation and hope for more is that Fujino has promised branching paths or at least events(See June Progress Report on his patreon) and yet there was no sign of that really in the perk leaks. Now my current and I think highly likely explanation is that the demo version released is around two month's old or at least before he moved, so many things could be explained in that way, like he just had to write the perks out for the menu to work and he took it as an opportunity to write an outline for the story. Also fujino himself stating that at the end of the month that the menu's will need explaining(the two menus ones I think explain themselves) and the two bars would make no sense to have no influence over, this also does kinda point to that Fujino does have some more choices in mind(I also think the gold in the bottom left being so prevelent and having a custom border might mean something too but thats just me).
The two bars at the top are most likely an indication for a difference between an NTS and NTR rout.
The red bar translates to "uneasy/unsafe feeling" which i think might be an indication for scenes like the nurses office scene where he "catches" asuna and inoda with it maybe reducing again if he thinks he's being suspicouse of them for no reason.
Kinda like an invers stealth mechanic?
The green bar translates to something like "lewdness/pervert level" which my guess is that Kirito will slowly become more and more aroused by the lewd acts going on around him without being 100% sure who it is.
Kinda like a curroption system but for Kirito?
My guess is that in terms of progression both routs will end up being quite similar with the differences between the two only becoming truly apparent towards the end.
I doubt we will get anything like a truly open world with different choices since it would be really hard to keep track of and develop with monthly updates.
All of this is just speculation tho.