It will certainly vary from version to version, so far it was one of the most complex update because we had to imagine part of the layout outside, bg artist had to switch to blender to make believable outside environnement, the script has been rewritten and polished countless times to be more tight than usual, we shortened a lot, it has the biggest amount of sexual scenes etc. It's on the short side in length and that's because almost everything in it is brand new. This might not be always the case, I'm hoping that after R7 we regain a bit of efficiency. R7 has a gambling mini game that is pretty ambitious and will serve as a mean to obtain ton of things, past that point I don't foresee anything big regarding the gameplay loop. Anyway this will certainly be my last ambitious H-game or last h-game if anything so let's see how it goes.