Not sure about some of the game mentioned here. I do think that Age of Decadence is great, felt a bit clunky at first, but then I totally got sucked into the world, but I remember it to be longer. Also, I would maybe not call it fast paced.
I also played through Shadowrun Returns, but I remember that game to be extremely linear with very little extras even on this already linear path. In comparison to Shadowrun: Dragonfall it felt more like a proof of concept and then they somehow had to wrap it up (which might be the case anyway). Anyhow, it is recognizable a WRPG and fast paced.
This is not exactly fitting the request, since these are not WRPG's, but I wonder if they might fit that request anyway:
There is
Unrest which is more of an adventure with various short storylines in an RPG-ish setting.
King of Dragon Pass which is described as a mix of RPG and strategy with a bunch of choice and about 8 hours per run.
If you are in the mood for some turn-based combat with moderate debt, I actually had a good time playing
Gorky 17.