I know this is WIP so I just wanted to confirm: The greyscaled versions will be properly replaced by depictions of partially completed workshops, right? I assume that's why you went for the "collection of things" look rather than trying something more cohesive.
As for the loom specifically, you wouldn't weave spider silk like that anyway. Considering that the graphics are supposed to move away from representation via unrelated symbols (as in ASCII) to be more representational, I agree that switching to something more realistic would be a good idea. It's also weird that you've depicted mechanisms hung up to dry.
From an art standpoint, aside from content issues I think the main problem that really jumps out in the workshops is that all the forges and furnaces lack the appearance of depth. They look like they're maybe a foot deep at most, but they should be at least as deep as they are wide.
True I suppose, and guess wool might not be much easier. I'm about as far from an artist as one can get so not very good at visualizing that kind of stuff or if there's any feasible changes or additions to make, that one was the only one that in my mind stood out somewhat anyhow (I'm sure I can get used to it either way).
Really, it should just be spooled thread, since thread is the actual input, and the webs that get collected would be spooled or otherwise treated as a thread and not carefully carried while fully intact. It's a shame spinning happens at the farmer's workshop, since that would open up some options.