@Talec: What about Ryou then
personaly, when Clannad started I had a crush on Ryou, because I really liked her style and appearance (as a Shiori-fanboy, of course
). But about fifteen episodes later I was annoyed of her fail in every characteristics, lacking in personality, lacking in developement process, et cetera. This was going this far, that I've canceled Clannad about episode 18-19 with a "Kanon 06 was great, Clannad is just awfull" judgement. Since then it's on my "resume"-list for a new try, but that's just an example (beside how impulsive I'am) how a promising character (Ryou) can shoot herself in the out.
A lot of people didn't like how Fuuko got in the way of other characters arcs, hence her lack of popularity compared to the other main Clannad girls. Well, in this contest atleast - Apparently, that's not the case in Japan.
This is what makes ISML so interesting for me. As an example, in my region Nagisa has almost no fans, because of her "slimplistic" character. But international she seems to enjoy great popularity.