I took into consideration what you said, and although you do make some valid points, i covered most of that in the text. Maxing silver bolts first has almost no benefit, as its strength comes from true damage based on max health. And maxing it early does not have much benefit because characters dont ahve a spectacular amount of health by lv 9. But maxing tumble can help substantially in the basic physical damage compartment where you are lacking early game. Even more so with this build.

And yes I am level 30, have been for several months, and assassins are easily avoided if you are vigilant enough. For early defence, i also said that no build for vayne is solid and by the book, and that often getting defence items early, based on the enemy team, can be a good choice.

Believe me I do agree that anything above 2.0 atk speed is not helpful, but these items and runes take you to 2.1 atk speed, at which point i do not go on to add another attack speed item.

And finally, for the runes, I stated that i was not a big fan of them, and to tweak them to your delight.

While I can honestly say this build should work fine, Vayne doesn't seem like the right character for an attack speed build. Her Q stacks well with Sheen/Trinity Force, but you didn't include them. Silver bolts stacks better than Q with attack speed, but you maxed Q first. Item-wise, very awkward.

The second problem I have is that you have no defense until mid-late game. You will get destroyed by competent assassin players, but I can probably safely assume you are non-30 or low elo and don't see them.

Last issue I have is that you wasted your glyph and seal slots. Mana regen or flat magic resist would be a much better use for them, seeing as the attack speed runes are so weak.

If you didn't know this, champions have base attack speed bonuses. IE, at level 18 vayne has 55.8% bonus attack speed. This amount does not stack multiplicately with items.

TLDR: Too much attack speed on this champion.