Hello there,
1. As addressed before, this would require time for creating another system and information since not all characters have the information you are requesting. The community guide and the gallery drive can be used to see all characters.
2. Again, won't be done. Completionism is not something to base this of. The game is open for modding and some people already changed the futa characters with those.
3. Suggesting more content is not a solution to bugs happening. In regards to the Anna, she is not at the house until you actually pick her up from the flower shop, the beach can work the same(also, not her son). In regards to the comment about how booty calls works, I see you're taking it quite literally, the system can make it look like it is, as if it were just a list of names to go through for a scene. And is really something you can already do, just go visit the character. Your statement about Anna explains what could be wrong with this, is Himari closing the dealer to go to a booty call?
4. Decisions have consequences, and there are multiples save slots, this is not an excuse for wanting a route to tell you what it locks. The player is able to save before the decision or replay to see the other outcome, which again is the replayability part.
5. The other attributes are used for flavor text and in some cases scenes.