Enough space in the roof for an AIO GPU cooler? That'd help with the noise under load

I’m holding out on eGPU until Thunderbolt has enough bandwidth, PCIe 3.0 x4 is just not enough. Maybe when CPUs and Thunderbolt support PCIe 4.0, eGPUs can become viable. There is a lot to look forward to, USB4 and native support for Thunderbolt by Intel CPUs is coming in 2019!

I like the idea of these especially for a laptop just not the price.
I'd have to be confident that it would last and all parts replaceable to consider it a long term investment and hope to get at least 3 cards use out of it