I find this application really well done, but I think contact management is missing:
First, if a contact appears on multiple gateways, I would like to gather them under the same name.
Then, it would be good for the name to be changed, being a multiple account name or the name of a single contact, as I sometimes don’t remember that duck_tape_222%server@jabb.er is in fact John Smith, especially when there are 200 of these.

Other than that, keep up the good work, this is really promising, and already well done compared to a lot of other competitors (that all lack this contact management either).

I just saw that you can add jabber contacts that are already in your list, and assigning them an alias. So second point cleared, even if it is not obvious.
Unfortunately, giving the same alias to multiple contacts does not gather them in a new meta-contact for multiple gateways.