I stumbled upon this document and think it would be a great feature, if spark would force (or in the first place try to establish) a OTR encrypted chat session, if the opposite is using spark as a client too.
The benefit of "forcing" OTR is, that users who're using spark do not need to worry about encryption (or their messages beeing logged in a readable format by the server admin) nor they need to think of enabling OTR in the first place if they start a new conversation.
What do you guys think? Possible? Silly request? Breakthrough in the development of Spark? :-) Let me know!