Sashing or no sashing?

I've had these strips sewn together for several years,

but I've stalled on the sashing.

At first I was going to make this a more traditional Chinese coins quilt

but now after playing with strings with all of you,

I'm wondering whta you think of a less orderly approach.

Here they are laid out side by side without the coins matching up.

I'm also thinking of inserting pinwheels or some other feature randomly.