default round caps for new strokes - always

Hey,
I draw a lot of icons, and almost every stroke I make needs round caps. Right now, every new line, arrow, or pen path starts with Figma's default cap, so I manually switch the start and End points to Round on basically every layer. If I miss one, the whole icon set looks off.
Could we get a default for this in Preferences, next to Nudge amount? Set it once, and every new stroke uses it. A default join setting in the same spot would be great too.
For now, I duplicate an old line instead of drawing a new one, or run a plugin after. It works, but it's a chore for something that should stick.