I disagree on Flash being useless. It can essentially double the range of your teleport, allow you to blink if you've run out of mana, or get out quickly if you've Riftwalked into a hairy situation.

Also, with some of the things you said, is this an older guide? There are a lot of things in it that don't apply anymore, like Zhonya's ring having been changed to the hourglass, and his Netherblade giving bonus magic damage now instead of armor penetration.

It is a good guide other than that stuff though, with lots of detail, so I'm going to give it a +1 in hopes of these things being fixed.