I think it's the yanked out of for coop choice that people are complaining about....
Because heaven forbid should they have to waste 0.05 seconds of their life by pressing a letter on the keyboard again
I would guess it is the fact that you lose the focus of the dialog you are reading when a new dialog starts, makes it hard to follow and if a coop decision comes up you sometimes lack any context and can not open the dialog log to check what was going on.
So yeah, the system has some room for improvement on the UI department, besides that I think it is working fine. But, I would not have minded a more detailed manual or even better simply a rule book for the system.
