I've finally managed to remove last uses of UserListElement, UserListElements, UserGroup, UserList in Kadu (not including modules, but it is work for post-alpha releases).
Uzi is working on new ContactDataWindow (for editing contacts). After that we can restore contact management functionality - it is hard to use IM without that :(
I'll work on removing UserStatus and renaming Status to Presence. After that - rest of Gadu-Gadu protocol refactorisations (FileTransferService, VoiceService, SearchService...).