VNs can make pretty good interactive games - take some of the Eushully productions for example. I think that's what SoC is aiming to be.
Gameplay is far from perfect, but it's pretty fun overall. I you play a bit and learn how it works, the game becomes easy to navigate. You have more than enough time and resources to accomplish all the main goals (conquering Raeve keep, gaining allies, conquering Rastedel from inside). What is important to note is that most of your actions toward those goals take place in the exploration mode which is separate from the story mode. You can do all the stuff that is needed during the exploration and at the same time complete NPC arcs in the castle without any issues. Most of the sex scenes are tied to the castle NPCs. Other ones will occur naturally as you progress through the map, taking villages, abbeys, visiting Rastedel and orc/goblin camps.
As for the changelog of the current version, it was posted here a couple of days ago.