You obviously have really good eyesight. Unfortunately, mobile users like my brother, a 40+ executive, do not; he has to take out his reading glasses these days to read small type. So you managed to come up with a mobile browsing organization concept that seems like it will only work on devices with at minimum iPhone-like slabs of glass, yet still manages to be about, literally, text in 2-point fonts. Also, if you browsed some old papers in the ACM Digital library -- you are a member, right? -- you could read how fish-eye and zoom-interfaces actually do not do so spectacularly well in tasks. So using them to arrange slabs of data in an already size-constrained environment in a way that leaves 50% of the screen unsused gray half the time really needs some justification here.
This is what user testing is for. Let me know how it works out with an actual cross-section of the population instead of 20-somethings. Meanwhile, look at how Sony Ericsson is doing tiling for their latest attempt, it uses the whole screen all the time.