Topic: Wish list
I want to premise it's not a "at all costs list" It's more a "it should be considered a core feature, an official extension or an user extensions?"
1) Cookie: choose if it's permanent at login (enabled by default), not in your account settings.
2) Display: a setting for choosing number of post and thread per page (I don't know why forums make two distinct settings...)
3) Search: search in all forums of one category
4) Search: search in a single thread
5) Identity: sex and birthday date
6) Identity: separate page for IM profiles. Link of that page next to "email" link in viewtopic.php. Modular IM fields.