Very interesting, I haven't tried a "stats only" start before myself. You could have probably taken the Submissive Flaw too if you didn't really plan to participate in many sexual encounters.
The rain only waters plants when you are on the map, at the moment it is intentional to reflect the idea that it might not be raining everywhere at the time. I am not fully set on whether this will always be the case yet.
You get a cursed piercing if you lose to a Werebat, however, someone reported that she didn't give him one when he had the Submissive Flaw so I still need to look into that bug report. The piercing can only be destroyed by the Goblin Smith (for a price) or dispelled with a Remove Curse Scroll. If you have it on for a few days it starts giving you permanent Flaws like Submissive and Masochist.
