I hate the power brick for Xbox One especially for such a huge console. Not sure about the Wii U but I know the Wii had a power brick and I hated that as well. The power should be internal. Out of all the problems for consoles, a power failure is probably the lowest of them all.
Like I said in my predictions, I don't see Sony lowering the price of the PS4. First, there's no reason for them to do so. They're dominating overall and even when they lose a month here and there, it's by a minimal amount. Second, with the Batman bundle already available for pre-order and it coming out after E3, there's no way Sony drops the price of the PS4. I can see a price drop for PS3 so they can start clearing them out of their inventory.
Third reason is that im sure they have some plan for the Holiday season and even if they don't and lose October, November and December to Microsoft, it won't hurt them whatsoever unless it's by a large margin which I don't see happening. Sony just has to withstand Microsoft's "all in" Holiday approach and they'll be fine because once next March hits and the Uncharted 4 bundle releases followed by SFV next April, whatever they lose in sales during the season, they will get it back with these two releases.
While it would be perfect to announce a $300 slim PS4 at this year's E3 since it's the 20th Anniversary for them in regards to NA, I don't see it happening until next year. $300 slim PS4 at E3 2016 in much more likely especially since Morpheus is supposed to release in the second half of 2016 and should be cheaper than the PS4 itself. It will come together at next year's E3 but not now.
Sony can sit back, relax and see how Microsoft does with Forza, Halo 5 and timed exclusive Rise of the Tomb Raider (which by the way im guessing will be a complete version when it releases on PS4 in a year from now) against whatever they have and even if it's nothing in comparison, until Microsoft's Xbox One crushes Sony a few months in a row, there's no reason whatsoever for them to panic and make a rushed move.
Ironically, all Sony has to do is look at what Sega did 20 years ago and quite simply, not do the same thing - make decisions that are rushed and panicked.