No more of this boute bashing you either learn to speak ultramarese or git out of this country!
seriously though Roboute is important but by and large I think the whole thing about 40k is the idea that everybody in this universe (i mean everybody) is lain to waste over the course of the thousands of years-long battles, even the emperor is just basically an oversized servo-skull, at the end of the day he dies in battle just like the lowliest of whiteshields, though your average imperial citizen doesnt get a stasis field and massive temple...