Improving the PSV : release a Basestation
all it needs is to take the docking station - expand it out to have HDMI and a 2.5 inch HDD expansion dock/USB, and a vita memory card read/writer.
Once connected to the Vita you could theoretically download games through the vita to the HDD dock.
So you can have a "companion" small form piece of hardware that you can take on your travels that acts as a base that could contain all your games, music, videos, etc. from which you can also copy over or watch/play on a TV.
... okay, probably not THAT much appeal of such a device, but i'd be all over it.
Yeah the docking station is basically the PS3 and thats what they tried to market in the beginning, but it didn't work.