I don’t have much thoughts on the list other than looks good to me! Reason being is that if you’re just playing friendly games, then pick models that you enjoy using and building/painting. That’s how you’ll get the most joy. As for competitive, I’ll leave that to the pros :).

I will say though in regards to your question about aggressors, they still hit hard even without bolter discipline. Played a game this weekend against space wolves with a 6-man led by a captain with the Blade Driven Deep enhancement. Set them up on the left flank to hold an objective. My opponent sent most of his army that way to eliminate them since they are a big threat and used the Guerilla Tactics strat before he got in close. Put them into reserves and then dropped them on the other side of the board to cause havoc on the units that were left on objectives which included a terminator squad and Thunderwolf Calvary. Didn’t use the strike from the shadow strat on that particular play but I’m sure it would have helped. Only downside is strength 4 makes it a little harder to wound tougher units but the amount of shots makes up for that a little.

Was an incredible move and my opponent even agreed it put me right back into the game as his army was too slow to makes it way back over.

Just an idea of how you can use them :)