Blade & Soul seems to be headed the same way as AION: mostly with US players as an afterthought and extra spending money on top of the actual playerbase in Asia. If they close it here, it means nothing to Korea/China/Japan play, but if they shutter it there, we're SOL.
Guild Wars II approached the 2 millionth sale recently. While that's a short term success, their microtransactions after initial purchase seem to matter to the life of the game, so I don't know if Arenanet is in the crosshairs or not. That, and Arenanet is better poised to make a worldwide appeal title than NCSoft is at all, with players in Europe, Australia, and South America (all countries with players I met in GW1 when I played it.) That really is a toss up.
Wildstar/Carbide Studios is new to the scene. If anything gets shuttered or sold off, I feel it'll be them.
That's my take on things. As far as boycotting NCSoft with me, it'll be an afterthought when City of Heroes is actually shut off. If NCSoft ignores us and does what they plan, or if a Press Release comes out thanking our participation in SaveCOH, but reaffirming their timetable and telling us that the decision is final and non-negotiable, that's when I'll start telling folks to pass on NCSoft titles.
Not from the age of City of Heroes and the reasons behind the shutdown, but for the fire and freeze tactic they pulled on us which I wholeheartedly believe was all about the finances and not about us at all. After paying for years, after following their terms and conditions, and after all the time, we get told "You're done. The Market is shut off, and in three months, we're shutting the servers down. That is all."
I'm not after free swag or demo-codes, but this is really a cold reception for a game that helped give NCSoft it's recognition and foothold in the United States in the first place. How would I do it? (Does it matter? Any variation that anyone can come up with that showed any consideration for the developers and players would be an improvement.)
If there's anything to take away from this: there's still time for NCSoft to make this right (extension of end-of-life at least until the end of the holidays at the least, sale of IP, reversing their decision and running COH indefinitely until other options are known at the most, or anything along those lines). And it's not beyond me to forgive a mistake. But until then, until that last possible moment comes that NCSoft makes it perfectly clear that nothing will happen but closure despite our efforts and energy, I'm not boycotting anything, or telling others to join me.