first of all.. congrats.. really a good job!!
I saw that you are planning to add a lot of new features.. I think that how it is now is enough for a lan office user.
New features could be useful (like recent history on window closed) but someone could cause some problems (voice chat?): program could become heavy, less stable, and it would be great if they can be added only if users need them. it's just a suggestion..
keep a basic prog.. with additional features in a sort of add on pack.
If you want I can post u the translation file translated in italian and which is already working in my office.
Thank you again for this application!!