I finished my JS quilt about four years ago, and have been quilting it for about four years - at least that's what it seems like. I have found that, if you have a copy of Benda Papadakis' book and a fairly strong magnifying glass, you can see the stitching in most of the photographs of the original quilt - just.
You're right, each block is quilted differently, but after 81 blocks I have got come to the point where I have a fair idea of the style of quilting that was used and figuring it out becomes a little easier to figure out.
I think it's worth it, if you can persevere that way, as makes the final phase of the quilt a bit more interesting.
Well done on completing your quilt. But don't stop now.