Improvements to Variants Feature

I would like to suggest an improvement to the existing variants feature. In its current guise, it isn’t possible to customise the combinations when there are two or more variations to a product.

I sell alloy wheels for vans and other commercial vehicles and use the SIZE variant along with a VEHICLE variant. I have found this to be lacking in functionality. As not all wheels fit all vans in all sizes, I need to be able to edit the combinations that are auto-generated by the system otherwise It could be misleading for the customers.

If an update could be rolled out to allow us to create our own combinations - much like the Woo Commerce plugin for Wordpress - it would massively improve the feature.