Meh..
If they would show consequence of your actions, I *might* be okay with it.
I just don't get what's it all about. The only role playing games I remember to allow free play after completion are Fallout 2, Morrowind and Oblivion.
Witcher? Ended.
KOTOR? Ended.
Kotor 2? Ended.
ME? Ended
ME2? Ended.
Fable? svcked.
Fable 2? I'll give you that one.
NWN? Ended as far as I know.
Alpha Protocol? Ended.
Dragonage? Ended.
The list could be longer if I really tried. These are just out of my head, without giving it much thought.
I know that most people here that have played a beth game expect the free play after the ending, I know I did after my first run of FO3. Then I reminded myself that most games have an ending, and asked myself why I wanted it to have open play. The ONLY reason I could come up with was "Because Morrowind and Oblivion let you do so and they are made by Beth as well".
For me, I find myself playing after the MQ for a short while and revert to another character quite soon. It just gives no challenge. Best example of worse to play after ending is the GTA series. after completion of the quests there is just nothing interesting to do besides killing civs in a variety of ways.