I am planning on keeping the 8x8 pixel logo, as I think it is an important aspect of the system. What bothers me right now is the main color (the gray is very boring) and the fact that the black implies going outside the 8x8 size but looks like it's missing.
As for the DB16. I think it looks pretty good, but the values are lacking. I am just starting with pixelart, so if you feel comfortable in tweaking the DB16 palette to fix its values, feel free.