User blog comment:Willbachbakal/(Champion Rework) Varus, the Arrow of Retribution/@comment-25228021-20150501160206/@comment-25228021-20150503125935

It's not so much a bad thing as it is a problem for the burst you want to emphasize, since he needs to soften up enemies for a while before getting to do his damage, much like a bruiser except pushed even further.

"in the end, the loss of AP scaling on his autoattack steroid returns in the form of an additional means of accessing his passive." This is more akin to raising his DPS from skills instead of his burst, because the damage is less good, but can be triggered more often (or not, given that in a teamfight, getting to proc Blight twice is already pretty hard).

While I do agree with your reasoning on E, I would still limit the AA range bonus, to something like 1100 just in case. It's still twice his regular range and very powerful, without being limitless, which is just begging for an exploit in my opinion, namely being able to attack without even being near a dangerous spot.