I agree with most of what you said.
It should have never been marketed as an 8-core. It should have been marketed as a 4 core (module) with 8 threads. This would be similar to intel chips since the 8150 does trade blows with the 2500k.
Another thing too is, even though the power efficiency is horrible, that honestly never really mattered to most enthusiasts on here. BD overclocks high, but sucks a lot of power. Similar to netburst. However most enthusiast users (I know I could) could look past this. This would however be a problem for energy efficient users. But I'm sure those users wouldn't be looking into high end enthusiast grade CPU's either.
All in all the architecture has great potential, and I do agree it does need a lot of tweaks to increase IPC and power efficiency. The largest reason bulldozer was considered a failure was because of all the hype behind it, and the branding of the first "8 Core Desktop CPU".
And yes, the price is too high on the parts as it stands. The best buy at this time from the AMD side is probably the 1090T if you are looking for great multithreading.
As far as power consumption, I have been told that maybe the design did not consider hkmg needing more power than soi