First of all, thanks (again) for the support and feedback everyone. I just read today's State of the Game and I do think that Cryptic is paying attention to threads like this one. I'm eager to start seeing some of the feedback about non-combat content work its way into the game once some of the higher-priority stuff gets worked out.
Glad to hear that : I never though of a diplomacy system this way, I think you and Malize may come up with something really refreshing.
Well discussion with Mentalx has convinced me that the simplest implementation of these types of interactive mental feats (as in the OP) is the way to go. No extra skills, no complex UI choices or decision trees, nothing overly wordy.
To-the-point representation that will get quick resolution. (After all, imagine if you are "in group"...what are they doing while you are doing the mini-game? If they are waiting on you it will need some form of quick resolution.)