Not read this yet but will.
Personally I think 2015 will be largely an extension of 2014 but a bit tamer.
One cannot dispute the impact the USA has on Global Affairs:
With 2016 being an election year, the existing Government will try to prop up the economy a bit more (perhaps artificially) to satisfy middle class voters --- thus a better economy at the expense of future generations.
Obama (to his credit) seems reluctant to engage in more disastrous military interventions. The main focus will be ISIS, and even here USA involvement will be limited. Obama will be more than happy to pass that problem on to Hilary (whom he loathes) or which ever Sheldon Adelson funded right wing hack wins the Republican nomination. Since even Hilary seems to be republican (Very Hawkish) on everything except some social issues this is a very ominous sign for 2017.
Thus I think 2015 and 2016 will be relatively uneventful but the shit will hit the fan in 2017. I look for a significant USA intervention in 2017 under the premise of fighting terrorism via ISIS. This will likely be expanded into efforts at "Regime Change" in Syria and Iran. Iran is closely linked to Russia. Russia, after flirting with the west since the Gorbachev era, is being increasingly pushed into China's arms. While I do not expect WWIII to break out, it is quite likely China-USA relations will suffer severely by 2017, and China's military is already showing signs of chomping at the bit to display it's capabilities. Thus it would not surprise me to see China flex it's muscles more in 2017 or 2018 on issues like the Spratly's and even possibly Taiwan.
A wildcard is Israel. They suffered an image catastrophe this year, with their large scale slaughter of Palestinian civilians and images of Israelis pulling up lawn chairs to cheer on the carnage. I doubt they can afford another large scale slaughter in the near future; and will continue their "slow strangulation" policy by stealing more land, denying funds, natural resources, movement etc. Thus, the policy will largely be the same as it has been for the past 30-40 years, except perhaps accelerated with Obama as a lame duck president.
The real Israel wild card is that Netanyahu, seems absolutely desperate for a war on Iran. He may not be willing to wait until 2017. If they do something stupid like attack Iran on their own -- and Iran retaliates -- then all bets are off. The USA and Russia conflict becomes even more direct, and you might even find China playing the role of peace maker.
North Korea is also a wildcard, but I don't see anything happening short term.
Economically, the US$ will most likely be propped up as discretionary income is usually more of a factor than jobless rates in election years (more people are affected).
The most important Economic factor is the potential collapse of the Euro, but I see the Euro as dying a slow death (perhaps lingering on for decades) so do not see anything imminent in 2015.
Cheers,
RD