I use it for external GPU and an external TB2 SSD raid array. The thing is, these laptops are starting at $2500, ignoring the base model integrated GPU that is just there for making the starting price attractive (although that one could benefit the most from an eGPU...)

It sounds like a technical reason for it being excluded (lacking extra PCI-E lanes) but it is just disappointing on a laptop in the $2.5k-$3k range in late 2017.