Sequel being considered?
If there is a sequel, then there needs to be a stronger narrative and better characters than the first film. The violence needs to toned down and the film needs to make better use of the 3D technology. The first film would have looked equally good in 2D.
I would like the sequel set in any of the Chinese dynasties or even a modern contemporary setting. I would also like to see more magic, supernatural powers and KungFu in the sequel.