With the leak out, here's a question: hypothetically speaking, how would Farfetch'd perform in LC?
In current LC it'd probably be good, the main issues being its lack of Fighting-type moves outside Revenge and its just slightly too low Speed. It could probably run some sort of Agility+Stick set with autocrit Leaf Blade and 50% crit Brave Bird/Knock Off, though this set would have not insignificant issues with opposing Steel-types and particularly Pawniard.
The main thing Farfetch'd has going for it is power, being able to crit consistently off 18 (or 19 with Adamant) Attack makes defensive checks difficult, particularly with access to Leaf Blade for coverage. Main issue it has is that Brave Bird recoil is going to wear it down quickly.
An alternative is probably Swords Dance to double down on "kill everything that's slower" - probably best served on webs builds. A 50% chance to just OHKO everything that doesn't resist Flying is pretty good.
+2 196+ Atk Farfetch'd Brave Bird vs. 212 HP / 196+ Def Eviolite Spritzee on a critical hit: 31-37 (114.8 - 137%) -- guaranteed OHKO
Pawniard's the largest obstacle for Farfetch'd that doesn't go for outspeeding and KOing.
Optimal spread is likely 20 HP / 196 Atk / 76 Def / 20 SpD / 196 Spe.
Defiant means Defog's riskier than normal, though Farfetch'd can't afford to take a strong neutral hit considering how much it relies on Brave Bird for power output and definitely can't afford to lose its Stick.
Sets that don't run Stick are generally going to be worse than the faster and equally strong Doduo or slightly weaker but Bullet Seeded Pikiek, both of which also have access to Fighting-type coverage.
First Impression is alright and will hurt with crits, but offers mediocre coverage.