"None of the quests were very interesting, just a long series of fed-ex and go-kill-a monster-and-bring-me-its-head/treasure quests."
I liked the whole ancient-lizard-man-temple-back-and-forth-in-time component. I found it very engaging; it reminded me of Planescape: Torment.
"Maybe some people like that sort of linearity but I prefer to come up with my own solutions to problems, a lot like PnP D&D."
What's an example of a computer game that you've liked, that allows you to come up with your own solutions to problems in a non-linear way?