There's also...
Fun to be had with these binned parts where you can buy a lower binned part and then push it to well beyond its intended performance bracket.
Think AMD Phenom processors. I had a dual core black edition, forced the right setting and a very overclockable quad core (cooling permitting).
Chiplets is just another way to package different performance parts together to create a new product and isn't the first time that Intel's cribbed an idea off AMD (though Intel are taking it a step beyond).
Really it's all down to how good the interconnect fabric is in practice.