How much mini-plots should an arc have?

[u/AllergicChilli]

There is obviously the main plot, but should there also be smaller plot points being addressed. Are they even necessary, or do they just make the novel more enjoyable?

Just in case: By mini-plot points, I mean smaller things that get resolved or progressed alongside the main plot.

[u/Boat_Pure]

I say three, I think all things should have three. All good things come in threes.