Overall I wrote quite a bit about how the game would have been more interesting and consistent a few examples are:
-Anne and Eric relationship having 3 levels (girlfriend, submissive, slave), each of them having effects over how easily Anne believes Eric, how much power and influence he has on the house and how openly will he woo the girls. At girlfriend level she would cut Eric when doing something improper around her children and remain with most of the house's authority, at submissive she would start to listen more to him and let him do his advances unless they are too over the top, while at the slave level you can't count on Anne trying to stop Eric at anything. The point was that each level Anne falls can't be recovered but! you can take actions to make the fall slower or even block if for a time (like drugging Eric).
-Eric taking actions and generating opportunities to stop him, for example buying a gift for the girls (stealing the gift), interacting with them alone (suddenly appearing too) or plainly seducing them (don't let him). Even more the girls reacting based on your relationship with them and their relationship with Eric.
-More details rather than simply going to war or staying at peace, rather Eric gets pissed off each time you directly interrumpt his advances or know that you are the one that are limiting them, if you piss him off enough after he gets the girls you are going to the boot camp, however if you didn't piss him off and he gets the girl you can remain in the house and still try to get other secondary girls. Being able to make a deal to protect a girl based on blackmail or equivalent exchange (for example being able to protect Lisa while promising to not stop his advances with Alice or viceversa, breaking your word gives quite a penalty).
If you don't interrumpt him too much your relationship with him will increase and he will even give you money or give you seduction tips to help improve your skills.
-Having a point of no return (like for example getting a girl pregnant) but before he arrives there you can recover any girl if you work hard enough (except Anne that requires you to defeat Eric).
-Being careful of opportunities backfiring and introduce relationship effects on opportunities (for example a girl that has a good relationship with you may just call you a pervert in a friendly manner if you spy on her and she catches you, or if for example Eric catches you spying on a girl and you have a good relationship with him he won't punish you, of course on the contrary if people are mad at you they will try to get as much as they can out of you).
As it may be noticed, I didn't like the idea of Eric being the ultimate idiot but rather a bit more normal.