No I do not necessarily find those sizes helpful.
I organize scraps by color and type. So Kids fabrics, Hawaiian, 1930s, Oriental, Batik and Civil War have their own stash. The rest is organized by color. I am thinking of selecting out 2 1/2 inch strips WOW irregardless of color. I like to use those as binding on scrap quilts.
I do not cut scraps up until I need them. this way I avoid a lot of unnecessary cutting and ironing.
I also use scraps for paper piecing and applique and it would not help me to precut scraps.