So my players, who are slowly getting more and more into the fluff, commented on some limitations on Black Crusade they think hamper the game from feeling like the 40k Universe. My group is made entirely (for now) of traitor Astartes and they felt that while immense bad asses that they were being hampered.
The first thing they brought up is how often they describe Astartes of all kinds rocking out on full auto with bolters. To me this was an easy fix. I double the amount of rounds consumed by Semi-Auto and that became full auto bursts. They loved it! The encounters after this house rule was introduced were a boarding action followed by a drop pod landing on a planet where they held off an advancing tide of infantry and vehicles. They used single shots and aiming to take out officers and targets of oppurtunity and switched to full auto to suppress and pin the enemy's advance.
The second thing is run and gun. My players talked about how they describe that a Space Marine can haul absolute ass and still engage targets due to the nature of his power armor and training. So in one instance the group was chasing a captured Space Wolf through the lower decks of a space station which was a labyrinth of corridors and debris used for combat and training. Aiming and called shots required the players to stop and allowed the distance to spread. firing while on the run of any type was a big hit to BS. But they felt like bad asses passing an agility test to vault a fallen support beam or dangling cables while taking the occasional shot of oppurtunity or laying a swath of fire to herd him to waiting team mates. The concept was everyone was running flat out so distance was relatively constant and would open or close depending on choices by the player or result of rolls. My khornate player simply focused on running so the distance between him and the space wolf steadily closed unless he tripped over something (it happened). It was one of our funnest sessions.
The third thing which my sorcerer actually reccomended was a sort of exertition factor for him. based on his psy rating and WPB and Corruption Bonus. It's the amount of times he can cast unfettered without taxing himself. he can cast fettered as much as he wants. Pushing costs double and doing something while maintaining an extended power is also double. Once he reaches past this limit he has to test against toughness or suffer fatigue. He likes the added challenge of rationing his strength.
So those are my current house rules what do yall think?