As a previous k06 GTI owner and now an owner of a BRZ for a year, I can say that the car does not NEED more power. Is it slower? Obviously, but the car was built for the purpose of handling, and most importantly, control. To me, the BRZ is designed for people who love driving (read: not racing, not auto-x, not tracking). Yes, the car is "track-ready" in that it can be modded and prepped easily for that duty, but in its stock form, its for people who really appreciate the balance and communication the car provides on a daily basis. For those looking for FI, I just point to the nearby Hyundai dealer because IMO this car wouldn't be for you in the first place. With that in mind, I'm glad the tS version doesn't have FI.
As for pricing and what you get, it's not too bad. I've actually imported and added the majority of STi parts that are on that car to my own already (my build thread for the car is linked in my sig), and am waiting to see what the pricing will be on the BBK, dampers, and the fender trim. Are there cheaper options to go with? Yeap, but for me, its a theme that I like to stick to in terms of OEM+ (I did it this way with my GTI as well). I do love to bring the car out to various meets to talk about the pros and cons and meet some great car enthusiasts, so if anyone is in SoCal and would love to see my car, give me a holler! Always like to see what people do with their cars. I do hope more people come to appreciate what the car itself is. I don't see the BRZ being better than the GTI or visa versa. They're just purpose built for different reasons. I'm actually hoping to get a mk7 GTI eventually as a second car to pair =D