Regarding spellweave: I noticed a loss in procs using both lower stage daggers vs using axe/offhand. I've noticed an even greater loss now that I have the legendary made (I did a lfr a moment ago and got 26 for the entire fight). I've consistently noticed a difference in proc rate across classes, with slow weapon users (e.g. ret paladins) getting significantly more procs than dual wielders (myself, my enhancement shaman, multiple dk friends). Our other rogue has had the same result. Having said that, and having done a little research before writing this, it seems that my experiences are in direct opposition to the prevailing notions about how spellweave works (i.e. fixed procrate etc.) and in what situations more procs are generated. So...what gives?
You'd have to be extremely unlucky to get 26 spellweaves in the entire fight. And I have never noticed ret paladins getting more procs than other classes, it's usually the opposite. Over the last few weeks, the melee with the highest number of procs in our kills were warriors, frost dks and our enha shaman, as was always the case. Those tend to have about 30% more procs than our rogues, which is probably due to bursting down the blood packs, in addition to cleaving. Some logs of kills with both weapon sets could help to identify your problem (if there is one).
I have not noticed this in any of my kills, regardless of LFR or Heroic. The only thing i've seen affect it is starting on Kalecgos' (Blue) platform first, therefor losing Spellweaving procs till the final phase.
Unsure if anyone has posted this, but an interesting trick for those of us with the legendary daggers, on spine, I find that canceling my stacks at around 20 allows me to have the main 5cp free proc during pretty much every tendon attempt.
Basically, when working on a new amalgamation, as soon as you hit 20, cancel, then just do your normal rotation. Don't cancel the stacks again until you will be working on a new amalgamation.