For example the Galaxy Nexus runs an Cortex A9 with a GPU made by the same company that made the vita GPU, the Nexus is OpenSource..
don't know if this is to any use at all, just noticed that the cortex a9 is used in many opensource devices.
also is anyone here into mobile development ? I find the hardware on the vita to be quite similar to the mobile phones of today, maybe some of the hardware hacks on some high-end phones could be implemented to the vita? such as the unbrickable mod that can be used for all Cortex A8 phones.
sorry if none of this was helpfull