Collection of Near-Inidenticals

On Tuesday when I posted about grids, (about which I have been almost giddy these last few days,) I thought I had more examples of "collections" instead of only the pebble drawing of yore. Today I remembered quick collages I did a week ago. The saturation and hue variations in real life are more varied, but you get the gist.

I have, dare I say, only 16 shafts. Minute differences in shapes and positions need accommodating, (let's face it, simplifying,) even with careful planning, which is disappointing. Unless I employ pick-up extensively. 

In these "collections", I also like each element to be slightly different, not too much. So, my favorites are top-middle, although preferably dots closer to each other,) and sections of bottom-right. Although I also like bottom-left quite a bit, that appears to me a completely different end-product, e.g. a real tapestry.

What do you think??

EDIT: Top-left is supposed to be dots of identical shape/size. They are not, only because of my tracing-the-shape-of-glue-stick skills, and cutting skills.