dave2008
Legend
Here's the thing, I mean, 5e is already pretty basic. It's nice to have some starter kits, but there's no reason to split the rules like that.
What if by splitting up the rules, the later boxes added options and complexity? I was trying to suggest that by adding feats in one box, multiclassing in another, and mass combat in yet another. You could also add a "tactical module" in another and stongholds and henchmen in another.