The progress bar is neat, and it's impressive what modern fonts are capable of and everything... but I'm personally not a fan of ligatures in code fonts. Not sure I can articulate why, but it just feels like we should draw the line at our fonts causing fundamentally different glyphs to be displayed in our editors (e.g. ≤ instead of <=).
Surely this comes down to preference. Does anyone who uses Fira like those ligatures?