I disagree somewhat. I do agree that your movement is a bit restricted in dark fantasy mode and you have to plan it out very carefully but thats the point of dark fantasy. The menu screen does say it will be harder. Its not impossible to get almost all of the content while also making progress, (just get as much content out of one girl then give her to the hoarde) cause I managed to do it the first time (got a bunch of content out heliose, mina, whatever the drunks name is, and whatever the dragons fingerless name is. Probably didn't get all of it but I got a lot) I played without using the walk through. This game is obviously not meant to be the normal game where your using it only to get off to. I actually play it like it'd a normal game if I don't feel like jerking off to it, and thats exactly why. The difficulty of the game makes it more gamelike, rather than an interactive porn video. Plus the fact that some stuff you will miss out on means you can play the game multiple times without getting bored and ultimately means you play for longer. If you are just looking for a I wanna fuck every moving thing in existence as a dragon kind of game, more power to you, thats why power fantasy mode exists, but this game has its own charm. It allows you to play it as if it was a normal visual novel, and also play it if you need some fat material.
Also I agree, heliose is best waifu