If they used a smaller optical disc, then it will be based on Blu-Ray which will bump the price up. Also remember the outside of the disk contains more data, so if the disc is spinning at a constant speed higher data transfer rates are on the outside of the disc. So if the disc is smaller, it will need to spin faster = higher power consumption.
There are several massive advantages of using flash based memory over optical. You have the much smaller footprint, lower power consumption, faster transfer rates and as the device gets older you can increase the capactity. The only downside is cost. That UMD drive takes up a lot of space, space which is limited on a handheld.
I can't see why Sony couldn't get by using flash, even it means having carts of 2GB. It doesn't mean they will though, Sony love their own proprietary technology especially when it comes to removable media. There's no doubt that Sony would have been considering going the UMD-free route, you can see that from the PSPGo and PSPPhone. Given the success of the PSP2GO the much be reconsidering that, but you would have imagine the PSP2 devkits etc would already have been in the hands of developers before the PSP2GO was released.
I imagine the PSP2GO's failure came to quite a surprise to them.
There are several massive advantages of using flash based memory over optical. You have the much smaller footprint, lower power consumption, faster transfer rates and as the device gets older you can increase the capactity. The only downside is cost. That UMD drive takes up a lot of space, space which is limited on a handheld.
I can't see why Sony couldn't get by using flash, even it means having carts of 2GB. It doesn't mean they will though, Sony love their own proprietary technology especially when it comes to removable media. There's no doubt that Sony would have been considering going the UMD-free route, you can see that from the PSPGo and PSPPhone. Given the success of the PSP2GO the much be reconsidering that, but you would have imagine the PSP2 devkits etc would already have been in the hands of developers before the PSP2GO was released.
I imagine the PSP2GO's failure came to quite a surprise to them.