I would love for there to be some pvp option, perhaps in the form of an arena. However, I would prefer them to work on pretty much everything else first then maybe release this pvp as a free optional DLC. It has been my experience that the mere thought of pvp being put into games (or even existing at all) brings out a lot of toxic anti pvpers, and having the option to completely ignore it by not downloading this content should hopefully keep most of them from complaining.

Training dummies could potentially be possible, or maybe some sort of summon spell purposely cast to lose control of the summon. Don't see any issue with this sort of thing being added.