Loaded up the game for my first mission, went for what seemed to be the easiest mission available, and faced down not only a few chaos space marines, but a chaos dreadnought as well.
How to say this without sounding like a foaming 40K nerd... I can tolerate the notion that the entirety of the Worldbearers is a faction you will face, with the interpretation of Space Marines being less swarmy than Rebels or Nurgle's minions, but being dangerous, armored foes.
But taking out a Dreadnought? I don't think a Space Marine could do that 1v1.
Also, crafting is a fun way to ensure progression, but tech priests don't really invent things in 40K. They maintain equipment by pressing the right button and chanting about it for three weeks while rubbing sacred oils on stuff.
That said the look, sound and feel does strike quite a chord so I'm more than willing to suppress these instincts in lieu of that.