I try to check here a few times a day!
In regard to Saffron, can you be a bit more specific in what you mean. Did you agree to sleep with her for the reward? And if so, when do you show up? The event is suppose to trigger when you interact with her House Door from the outside at Night. There should be no requirements what so ever as long as you agreed to receive your reward sexually and knocked on her door at night.
I think fixing the bridge might yield a bit more reputation if fixed by yourself, so there really isn't much of a difference.
Your action with Goblins in the Brothel mostly matter based on what skill you have. For example, choosing to Kiss in any of the options will add a portion of your total Kiss proficiency to the total customer satisfaction, etc.
You can have "fun" with ALL the Goblins in the village, you just have to approach them normally and select to Flirt with them. They will then have a possibility of asking you for sex. Their Sex scenes are sort of the same as with any normal Goblin in the village though. However, if you lose any Virginity to them, it will record them specifically in the notes!