Thats kind of cool! I really like the edges. Awesome ^^ Very smooth animated too (not that jaggy)
And about the P being smaller than the U, how about making the upper part of the P longer? As the U is pretty wide I´d make sence to have the "o" bit of P long (and just leave the | as it is)

i love the dithering in all the corners

yeah the P is a bit more smaller then the U

the u and the p don't quite go together. looks like different "fonts"?

I like how you made this different from the standard iso letters; loving the texture. Good work.

Nice pixels =D.  I love the colors, dithering, everything;