What really annoys me is that Killing Machine proccs don't matter that much anymore. It's simply free crits, not more. No skill requirement since there's only a too little difference between using KM/OB and KM/FS.
I'd love to see OB becoming a clear winner so that there might be a reason to not use OB.
Is it worth to put a blue(purple/green) socket on my cloak for a +4 agility bonus, or should i go for a red one with AP?
And is it worth for a +6 agility bonus(on my pants)?
As of right now, it's not worth it, but 4.01 may be live tomorrow. You may want to wait a day and find out. If and when 4.01 does go live, though, you're probably going to want agi/hit gems in the blue slots to get your socket bonus.
Was it written before how shall we tank with 4.0.1 Patch? Will there be a summary for the final mechanics?
Which seal will be us, Truth?
Expertise still not our major stat with Crusader Strike coming? Better to reforge them to master? Or still good to leave some for boss dodge?
Which spells generate and which consume Holy Power?
It's personal preference, really. I'd go with 1 point in Guardian's Favor since I don't myself using HoS that much, or using it on anyone else either. Whereas BoP/HoP are much more needed for dire situations.