I stopped reading Colour of Magic because I just became bored.
I think it's the three story structure thing. it means there isn't so much of a single story arc thing.
I liked how he wrote, but I'm not entirely sure I want to read more. He created an interesting world, and he clearly thought about the physics of that world. But I think it has too much silliness and characters accidentally getting out of danger, rather than characters demonstrating real skill.
Yes, I think I'd like to read about skilful characters in his world.
But I will try a later book, one of the more popular ones and see how that goes.