It seems the Vita has a lot of indie games but is lacking elsewhere.
Nope.

Though I believe you can rebuy some games that you own on a UMD at a discount if you prove you own it.
Vita Slim's battery seems to be about the same as the PSP version I used (PSP-1000), which is alright to me.
I also learned about the touchpad on the back of the Vita which makes it makes it look ugly, especially when compared to the PSP with that metallic ring on the back. It's a shame they put that onto the Vita because it's the only thing making me hesitant to buy it.