Back to "What was my first impression/reaction to Seven":
I was thrilled by the episodes Scorpion1+2. What I noticed first about Seven was her childlike face in those episodes. And she did not yet wear high heels (I think) because she appeared a lot smaller. Probably also as a result of all that Borg stuff attached to her body. Actually I didn't even notice her female attributes so much - they were well disguised by the Borg thingies on her. Another thing that I remember as something striking was Janeways reaction, when Janeway was sitting in her chair on the bridge and Seven passing behind her. I thought: "Wow - Seven gives Janeway the creeps!" This was the moment when I started to really look forward into the relationship between those two characters. I think that was the first time that we saw Janeway actually being a bit scared of someone else.
Otherwise: I really like Seven. But I agree that the catsuit was a bit too much. Seven is such a great character. In a way I felt the optical enhancements were unnescessary and had the potential to harm and reduce her personality. I was wondering which realistic interaction this outer appearance would have caused since the crew was pretty scared of the (former) Borg and pretty attracted to her looks. I had the impression that after a while the crew was interacting with her disregardless of the looks and later also disregardless of her being a former drone. I felt that it wasn't very realistic.