Playing with double weave blocks on 8-shafts here. There’s a difference between the first two sets of “offset blocks” and the second two sets. The first two using “skeleton tie-up A” (which produces more of a muted, all-over haze of colour) and the second two using “skeleton tie-up B” (which produces clearer colour blocks where there are different weft colours in each layer shed).
I always thought 8-shafts was perfectly enough for me and that I’d never need more… but now, in this instance, I can see the appeal of more shafts. The more “sets of 4 shafts” you have, the more block design options.