I would like to see something for separating rock from soil. Whether it is a 'screening bucket', 'soil preparator', 'power rack' or whatever the different manufacturers want to call them. Something that would fit the 425.
Something to pick up the soil, retain the rocks and let the soil pass through to the ground.. If it had a vibrator so much the better but not absolutely necessary. It would be nice to have replaceable/intechangeable screens for different size rocks. I am at the age where I'm not up to picking out rocks by hand or with an old fashioned stone fork. I get tired of rotortilling the same rocks year after year. Ijust want them out of my vegetable gardens, and my flower beds, and my lawns. Most of what is available is too large and expensive and it designed for clearing acres and acres. I want something a landscaper could use in tight places without hauling all the topsoil away and replacing it with fill. If I could get out everthing over 1/2 inch or so I would be thrilled.
I would get a lot more long term use out of it than I would a backhoe, or trencher, or a lot of other attachments.