It's a shame that, aesthetically, the video isn't very pleasing. It comes down to limitations of raw photon mapping really, as well as the hardware I have to work with. This scene has just short of 400,000 photons bouncing around it, but even that is not enough to uniformly light the objects within it. I would need to incorporate a final gathering phase of some sort if I wanted to correct the issue, and that would have a performance impact as well. I've got one or two ideas I'd like to explore but short of optimizing heavily and then using the new cycles to perform final gathering I don't see the quality improving much sadly.
More to come throughout the week.