A device with a slight static charge would be ideal to collect dust if introduced into the airflow, especially with an easily removeable filter. Totally wish something like that was implemented here, but it seems they have the airflow nailed down. Most likely not only a technology researched by sony, but also several other manufacturers, including amd/ati and subsidiaries that were encompassed in the process.
Something like that would be pretty cool, but specially if they found a way to create that static charge without using electricity, or dunno, maybe something taking advantage of different surfaces with different temperatures (im wondering if making the air to pass trought an small spiral with different temperatures the particles could "stick" to one of the walls)
I dont think is going to be much complicated, it needs to be something simple but i cant imagine what, i have to confess im very interested in that detail

There are 2 reasons why i dont think is simply a hole on top of the heatsink
In the presentation, lets say that they paid attention to a total of 15 "interesting details" of the design (i have not counted, but not much)... and that "dust collector" was one of them... so is important
If you made a hole in the air ducts (or the fan enclosure) you are losing pressure inside it, and you are allowing the air to "recirculate" (it could happen the hot air escapes in it and enters again, and so on...)
Also a small hole doesnt allows to "suction" all the dust from the heatsinks because the heatsinks are very long
So... i think the dust is collected
before the heatsinks (this would be ideal). I have doubts if is going to be so good and how good is going to work. Maybe it just collects a 8% of the total amount of dust in the airflow
The thing I like about the playstation, is that it was the ultimate retribution for what nintendo did. Had nintendo kept their side of the bargain, playstation wouldn't exist. Sony took those years of development that were just thrown aside, and turned it into the original playstation. Had Sega worked with them, rather than casting them aside, maybe they would have had a chance in the hardware market still.
I like the internals, mostly. The aesthetics and the price are my hold ups on this console.
Hehe, the playstation brand are artists collecting pieces from other companies and joining them together

They have lot of experience with hardware since decades ago, just as example for audio equipments, all them have small microcontrollers, some are manufactured by other companies but under sony requirements, and im sure there is a close collaboration with engineers from both companies, and when AMD opened the collaboration program that allows other companies to work with AMD to create custom designs they found the perfect partner for the APU

But i think the real power of sony is the huge spiderweb network of contacts they have with hardware manufacturers that makes the small components of the motherboard, when looking at how the motherboards evolves along time it can be seen sony replaces components by others compatibles (and usually more simplifyed and better) very frequently, is like if they are constantly asking to all the hardware manufacturers worldwide if "can you do it better?"... and eventually the other manufacturer does a better version (or same quality but cheaper or smaller) and sony replaces it
With software is a bit the same, 95% of everything (or more) is built on top of software available under an special license for companies using it for profit (and sometimes based in volume of products sold), but also the same software is available as "open source" or other permisives licenses that allows everyone to learn about it
The software engineers always keeps an eye to the software available for a "playstation" product and uses it if posible, in my oppinion there is no problem with that, i dont remember to read any story about sony "stealing" software dishonestly, so i guess they pays all the licenses and everythign religiouslly (probably they have an army of lawyers experienced in software to close all that deals... with lot of moneys)
In general i like that politics, the hardware is a bit experimental, and the software is... well what you would choose if you had an army of programmers working for you and a huge amount of money to "buy" the best softwares you find in internet