In-Game Voice Chat.
Add this, seriously! Make it like a press-to-talk, so if anyone in the party wants to say something without writting, he can just press a key and talk! I think this should totally be in SK. :)

Not a necessity, but would love to see this happen. I also foresee most guilds using some voice chat program, Vent for one, I think that is pretty common in MMO, I remembre when I used to play WoW this was the case.

Are two options most likely matters on my guild decision, but I will make a Ts server for my guild if they wish. Its defiantly would make the game more fun since you can kill, talk and relax.
If it was already added in this game it would be cool, but seems hard too add it.

It's actually not "that" hard to add, it just costs money...
Mumble works very well for SK or any kind of online gaming, by the by.
Can Mumble be hosted locally? I have been using it for a while but only to join other peoples servers. However I have hosted a small vent server for years with my friends.
Yup, one of my friends runs a server on his box for Spiral Knights nights.
this shuld be happen for sure its very clever and practical for someone who is a really slow typer..Spiral Knights HQ u should definatily add that