I'm tired of both the fans of Intel and AMD arguing over stupid and petty things. If you were to look from SB to Haswell there's almost no reason to upgrade. Almost insignificant increases in performance, which were mirrored by the enthusiast level boards. The difference between them is in the surrounding components. DDR4 hasn't really changed anything, but finally having SATA III everywhere has made quite a difference.
Likewise, a 140 watt TDP isn't unreasonable. Neither AMD nor Intel can fight the laws of physics, so jamming more components into a design will invariably increase thermal dissipation needs. As nodes get smaller and smaller this is compounded, because more switching occurs over a smaller area. Yes, voltages may decrease with shrinks. On the same token, increasing component count more than compensates for that reduction.
As far as AMD, they've announced that they aren't competing with Intel for the HEDT market. While they might have a position to defend, they've publicly acquiesced to Intel. Their best silicon is dedicated to APUs, so we haven't seen anything genuinely good come from AMD in years. Thuban was the last real competitor, and it only existed because it could OC to the moon and back. Releasing an 8 thread processor at 125 watt TSP and a 12 thread processor at 140 watt TDP isn't really unreasonable. With Intel throwing everything onto the CPU that's very reasonable heat generation.
In short, Broadwell-e is treading water. It's a minor incremental improvement, and changing the low end offering to something with all the PCI-e complex unlocked makes no sense. Intel would have to juggle the top end offerings to compete with it, and the high end consumer level offering would have huge competition. If the H/P/Z based PCH offerings don't have DDR4 pricing to differentiate themselves Intel will be removing the high-end sales there for low end enthusiast boards. I highly doubt Intel is that stupid.
At any rate, Broadwell-e is shaping up to be a joke. Like IB-e, there's no compelling reason to pay for a minor upgrade. Like SB-e to Haswell-e, the performance increase isn't likely to be justified by the large initial cost. Broadwell-e isn't making me want to give up on SB-e, despite any shortcoming I've experienced. Minor performance gains in multiple generations means no compelling reason to give Intel any of my money.