Yeah they really miss out on non clickable joystick.
		
		
	 
Oh, I didn't actually know if it was clickable. 
 
	
		
	
	
		
		
			There are very many possibilities for upgrading Vita
1. HDMI mini Port like in the developer kit
2. Better OLED screen
3. Glasses free 3D OLED screen (Sony has out right said they wanted to use a 3D screen but chose not to but in a revision, they might revisit the idea again) plus they were showing a 5 inches glasses free 3D OLED screen at CES earlier this year.
4. Refined clickable Analog Sticks like in the developers kit.
5. Button placement change
6. Better Cameras
7. Reduction in size (maybe a smaller 4.5 inch screen ?)
		
		
	 
I didn't know about 1. and 4., but besides these, they would probably make very little profit off of some of the upgrades listed. The reducing the size is really a downgrade, since core gamers are looking for the best graphics, hardware and features. If you want a small system, Apple's got a great one. Better cameras could significantly increase the price, depending on the amount. The cameras are surprisingly well done, and paying for an upgrade for a camera may seem reasonable at first, but remember that there is two cameras, and the only use for a higher quality camera would be taking pictures, which only needs one, not two. Buy two, use one.
Changing button placement would be no reason to buy a new one, and barely a reason to buy it over an older model. Also upgrading the screen would provide barely more detail, which also isn't a reason to upgrade, and only barely better than the old model.
Three main upgrading points are usually:
1. Hardware
2. Features
There really isn't going to be any better hardware for a LONG time and besides the analog sticks and HDMI, really no reason to even consider a new model, and the two decent strongest points of the model would be very little difference.
If I was Sony, I wouldn't even really release a new model for quite some time, until hardware improves, which would probably result in a PSP3 over a Vita 2.0 (Upgraded). Or prove to be fairly pointless because the original could still run everything else the new model could.
 
	
		
	
	
		
		
			About this 3d effect. Wouldn't it be cool if sony did a newer version within 3 or 4 years where you get 3d games. they should add 2 back camera's, a hd 3d screen and a few extra processors. they could easily do the same as with ps3 where 3d games can be played even on the older models without 3d tv or extra ram. Oh and they should add anouther 512 mb ram in the next model to make everything a lot smoother.
		
		
	 
	
		
	
	
		
		
			Not that i'm dissapointed with the announced version of the vita but in 3 or 4 years there will be easier and better techniques available and sony will want to evolve with the technology so the customers keep streaming in.
		
		
	 
But if you upgrade the system by a significant amount, but make sure all games can still run on the old system. Every new game released wouldn't push the boundaries of the current gaming industry. If they made games exclusive to the new model, (Which would really be a like PS 3 games can't run on PS 2 but PS 2 can run on PS 3) then they would have much better games that aren't dated back to what they had 4 years ago, even though they have new technology.