A build box would be nice
 

Dear HUD developers,
Your game HUD improvement is good! It's a polar opposite from youtube's ideas.
Very well done!
But from your HUD one thing you are missing.
A simple build box type structure, y'listening?
If you make it a square
A box, oh so bare
for items to go one and all
They wouldn't be bought
just closer to thought
ready in quickbuy, just stored.

You would be able to save
these builds that you make, oh so brave.
It'd save us all time
I made you a rhyme
Please consider this idea.... Lime.

You should never just have one set build for you're champ, It changes game to game. You only really have like 2 or 3 core items.

I know what he means, I already posted one such suggestion myself before scrolling thru further down here. Also good for you if you can remember every build youve ever done to every champ you play, but some of us older players are having memory issues :)

Im all in favour of a little shoppinglist you could predesign to your champs before matches.