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If you want GPIOs, you don't need (or want) an FPGA.

I don't know the details of your use case, but I work with low level hardware driven by GPIOs and after a bit of investigation, concluded that having direect GPIO access in a modern PC was not necessary or desirable compared to the alternatives.

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I get a lot of use out of the PRUs on the BeagleboneBlack, I would absolutely get use out of an FPGA in a laptop.

It makes more sense to me to just use the BeagleboneBlack in concert with the FPGA. Unless you have highly specific compute or data movement needs that can't be satisfied over a USB serial link. If you have those needs, and you need a laptop, I guess an FPGA makes sense but that's a teeny market.

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