We agree that the current kit functionality works really well. The next step that would add significant value would be the ability to include matrix items within kits. We have several ideas for future kits, but many of them rely on allowing customers to choose the specific size they need. E.g. selecting the size of saddlecloth, ears, and boots when building a horse kit. Enabling size selection within a kit would make bundles far more flexible and customer-friendly, and open up many more opportunities to use the feature.