OK, an interesting point here. If BluRay has a constant read speed, surely the differences in seek time (ie, the time it takes for the laser to move to read the next area of disc) should be absolutely negligable compared to the speed-up in read time (ie, the time it takes to take the data from the disc).
If they need more space for padding on a BR disc... what the hell?? There goes what I considered likely the biggest advantage of Blu-Ray.
Even with a constant rate, the lens still has to physically move back and forth. With well planned redundancy it won't have to move as much.
Anyhow.... I see Kojima's comments coming from a few different angles-
-Selfish Developer: He realizes that the resource is available to him and starts using it to it's maximum. In this case, the resource is a BD and he's using it for quality audio. He's inclined to use it to full capacity. When he's aware that there's some greater resource just out of reach (BD50) he gets vocal about how he wants it, because he can use it. I call it selfish because it's not something that's neccesarily going to benefit the user. It's for his own satisfaction.
-Towing the coroarate line: He seems (to me) to be strongly in favor of Sony's success. Throwing out comments like this don't hurt the cause.
-Communication breakdown: These sort of comments go thru several channels before they get to the public and more often than not, they are innaccurate or misleading to some degree. Especially when they start out in Japanese. It's so common for a developer to say something and either he doesn't get the correct meaning out or it gets misquoted or taken out of context or whatever. For example, if he really meant that he
could use a 50gb disc if he wanted to. Or perhaps if audio was just an offhand example and there where alot of other assets filling up the disc.
Overall, I hope he is taking advantage of the disc and I hope others do, too. The only significant technical "gap" between the PS3 and 360 seems to e the disc media. This is nice for us interested in the technical stuff because it creates a control environment to see if bigger media alone can make for more technically impressive games. If, 3 years form now, BD games are just stuffing the disc with hi quality audio, language tracks, and hd video, then I think it's safe to say that the bigger storage media was not very beneficial. Here's hoping the games of tomorrow will take advantage of the space in truly meaningful ways and be better for it.