Intel NUC with an eGPU

So, this is an idea that's been floating in my head for a while now. I've been wanting, for the longest time, an AIO entertainment device that can do just about everything. With PS3 emulation making great strides, the only problem with most NUCs is that there simply isn't enough space for something like a 1080 Founders Edition. Hence, my question: what is the best eGPU solution out there right now, what are the drawbacks outside of the GPU utilization not being 100% if there are any, and are there any other, lesser known quirks? I got this idea from the following video:

https://youtu.be/nUX9sueOUnA