Darius's W scale

Having his W just as last in order to learn spell is kinda weird and boring. This is supposed to be his 2nd main kit in skirmish. Sadly it gives nothing but -4 seconds cooldown reduction when you learn it.

This is kinda... awkward. I don't cry for Darius buff or something but can we have some alternative way to learn his spells beside "smash E untill lvl 13 for free 25% armpen and lower cooldown". This is just way too important compared to W spell. Statistic shows that Darius players who learn E second have way higher winrate compared to fellows who prefer to max E as secondary spell.

May be anyone can suggest some solution for this moment? I know i'd appreciate to see some thoughts.

P.S We know Riot's games pretty well. Just imagine his W to have higher mana cost every level without any improvement. (Even cooldown reduction lmao) I bet something like this could actually happen to them judging by current Crippling Strike.