Indeed. Far better for no one to be able to tell you apart from a broader civilian population by the time any coherent response could be made to your actions.
Either hypothetical powerset is far better wielded as a scalpel than as a hammer if one wished to get one's murderbucket on.
I'm sure with a little bit of ingenuity, someone could get around the pesky no suicide or certain death clause in Lesser Geas, too.
Why would we, aside from the ones where the risk outweighs the reward?
Whatever that reason is, it'd certainly be interesting to learn, especially if any particulars of it would now apply to one's self due to one's powers.