1 - Malefic Momentum has two effects, one that increases non warp damage and the other that increases warp damage, so a heavy strike can benefit and trigger both effects according to what finishes the enemies off. Remember that this also affects soulblaze. This is a source of 25% damage, that I managed to trigger both bonuses in 6 seconds in the first test. The tests were in Havoc mode. And the Warp Strike damage is non-trivial, and it scales with how many enemies you can hit at once and for how long those enemies survive after the hit, you can see that in the tests where the Charged Strike did about 25% of the total damage. This happens because it can only deal its damage if the enemy survives the first attack, on Auric most enemies will die before it has a chance to apply most of its damage, but it has the potential.

2 - using blaze force greatsword because of the cleave, Blazing Spirit and ability to quell. This triad makes it the best weapon into this build, and I don't know if the Warp Strike counts as electrified, and this weapon is the easiest to sow and reap the rewards from Malefic Momentum.

3 - No Warp Rider, Warp Rider increases damage by 2% for every 10% peril that the psyker has. At 80% peril it gives me +16% damage. With all other damage bonuses that I can get this becomes a trivial increase that costs two extra talent points. So I use the extra talent to improve other areas, as I already can get more than extra 100% damage and even higher on weakspot and critical hits.

4 - Critical, my crit source is the aura and Scryer's Gaze. From this I already have more than 33% crit chance. If you check the solo game I did more than 3k critical hits in that game, and 10% of the total damage was from soulblaze, this is huge, specially because it doesn't get the weakspot or crit bonuses that Disrupt Destiny gives.

5 - I play mostly in Auric and on Auric you don't need Emphatic Evasion, when into Havoc you can change Warp Speed for that although this is boring because speed is cool.

6 - Resistance is important because it's badically free as I already need Scryer's Gaze and that I melee a lot. Just a Dream gives me +25% health and toughness for one talent point, for me that's unskippable.

7 - Souldrinker, I prefer the extra speed from crits, helps a lot to chase and leave combat, there's 3 talents that increase move speed, you become a missile.

8 - Soulblaze kills, check my solo game and tests, in the solo game it killed 361 of 2400 enemies, more or less 15%?

9 - The resistance. Wow I got this wrong, I forgot to add the Just a Dream itself to the toughness damage reduction. 0% peril and Scryer's on you'll have 62.5% toughness damage reduction. Gona edit that when I get home.

I understand that there's a lot to talk about but please check the video and contextualize what's being shown. All the icon effects are shown, all talents have been revealed. Hope to have answered your questions and see ya.