Which other features could we restrict? Even if we restricted other features, eventually someone would make a post like this, but asking us to allow that other feature in the free edition.
We have to restrict the free edition otherwise there's little incentive to buy a license and we could go out of business. I'm afraid on that basis I don't think we can justify a more powerful free edition. If you'd like to learn more about families, the manual entry on families is a good overview.