Making a Case for the Classic Yasuo Build
I'm not gonna lie, I HATE seeing Tri Force on Yasuo. Here you have a champ that doubles your crit chance, and you're taking him and, as a second item, building an item that's all about multiplying BASE AD. Fucking fail. I think the Classic Yasuo Build is still the way to go; you just have to increase your crit chance from runes to 10%. For me, this means taking 9 Crit Chance Marks and 4 Crit Chance Seals. Yes, you sacrifice some early game flat AD, but showing up to lane with 20% crit chance has it's own advantages. If you're constantly poking with Q, then you could very well land a few good crits that will give you a WAY bigger advantage in lane than a few AD will.
This allows you to go with the Classic Build:

This build is just so far superior, raw stat wise, to side tracking your build 3800 gold to buy a Tri Force. Yes, your damage with Shiv + TF + IE is godly, but the 2 item damage spike you get from Shiv + TF isn't very good, to be honest, especially compared to Shiv + IE. And I highly favor the huge lifesteal and shield from BT over the mobility and slight extra burst damage from Tri Force.