@Statikk the real buffs Darius needs arent to his W, but E and R
His E getting the bug fix has killed his reliability to pull in fools, it needs a range increase. It should go from 550--->620, maybe more but testing needs to be done. This basically goes back to Darius pre bug fix in with clipping enemies at max pull range.
His R only needs a buff to the level 1 rank. It should go from 100 to 120. Most champs have a have a huge spike at 6, Darius's is sort of meh now, really weak at level 6 compared to pre rework(which i know is the point).
Lastly with his R, tie in that at rank 2 and 3 of his ult, his Q windup time goes to 0.35, then no windup at rank 3 ult.