Keep em' or kill em...

[Ciaran]

As for execute/ransom. I very rarely executed prisoners, except where there was a good role-playing reason to do so. Doing it for the cash just isn't my style.

Huh, if you execute your prisoners you don´t get cash - that´s the whole point: Either you execute them and are rid of them for good or you let them be ransomed back to fight them the next time around.

And to answer the question of the topic in the first place, I sincerely hope that taking prisoners and the option to kill them is back in MTW2.
However, I would also like the option to choose whether to ransome them back or not after a battle, and not have to kill them on the battlemap. Maybe to raise the ransom, there are precedents, after all.