I know it's the kind of the effect of the whole sig and everything, but I don't like the pixels outline at all. So that ruins the whole sig basically
Your style is good but can be improved drastically, I see you tried using the pixelate>mosaic filter, I can tip you on that: you need a grungy layer under neat and one on top and set the top grunge layer to some setting that lets you see some of the mosaic and then with mosaic layer make is so you can see bottom grunge layer, voila. It will make it look grungy with a hint of clean pixels.
Alright, unlike the others, I like the pixel effect used, although the pixels could be smaller. You used a good render, the colors blend well, the text is legible... Yea, make the pixels smaller so it has slightly more detail. Then I'll like it tons more.