I don't know which "ugly restrictions" you refer to. We still can't tell for sure which destinations we can ship to, so basically not much will change.
Transfer speeds is exactly what I tried to explain to you. There is no way the CPU can transfer more than 480Mbit/s to/from the outside. And actually access to internal storage is even way slower on N900 (~14Mbyte = ~100Mbit per second), for Neo900 we will see if we can get faster eMMC card. There's not much use in transferring constant streams of data into device at higher speeds than the device can store them internally.