There is one feature that I really miss in all Linux-IMs I
have tried so far: An "automatic contact list resize
feature", that automatically resizes the contact list
window, depending on the number of contacts currently
shown. Miranda had this when I was still using Windooz,
and I really loved it (with an option whether it should
grow up- or downwards).
I really hope this feature gets implemented, it shouldn't
take very long to implement anyway...