I have tried many blogwares and love b2evolution above all the others. However, to make it even better, I have 2 suggestions:

1.
It would be great if there was a place (possibly, a textarea box) where administrators can specify where pings are sent. Administrators can add any ping urls as they wish to (one url per line).

2.
I would love to manually set the order of the blogs and categories. For the time being, b2evolution cannot do these things.

Anyway, I love b2evolution so much "as it is" all the same.