2nd edition had that Fandir, thats when I started gaming. I do not know if it was in Rogue Trader as I didn't play that.
Where I used to play, virtually both armies would go onto overwatch on turn one, and end up shooting in the enemies movement phase rather than their own.
I still have a blood angels assault squad where all ten members had different weapons, as back then power axes and swords were different, I also had hand flamers, plasma pistols etc too