Yeah, it would be great to flee from combat yourself or your opponent(s)!
Maybe also a nice and funny(!) thing :
using a skill or combination of skills can immobilize one or more opponents so you have time to flee like for example : let it rain + blow a ice cold wind so all opponents that are standing in the poul of water are now frozen statues
It remember me clearly what Mardaneus did with Lanilor in DD

...
As a (sur)plus you can persuade them to give you nice or special loot if they want free again ! Or you first pickpocket(is this possible in D:OS?) them and run away ... probably the sun melting the ice after a while and they're automatically back mobile, or some other funny/cool thing that can happen ?