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I mean, it makes a sort of sense - Porygon was polygons, sharp and angular. Now that technology has advanced, they can render smooth shapes, so they make a creature out of spheres to demonstrate it. Absolutely no connection to the duck (or whatever) Porygon was, but hey. It'll make a good tech demo.
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The elephant (or rather, lion) in the room, of course, is that this is a dead-ringer for the iconic Japanese mascot for Mr. Donuts - Pon de Lion, A lion with a Pon de Ring donut for a mane.
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The only problem is... Pon de Lion was created in 2003. These betas are from 1997. There's a rumor that the designer for Pon de Lion, Yuichi Ito, worked for Gamefreak at the time, but in actuality he just did a commercial for them, for another non-Pokemon game. So I don't know if he was inspired by this almost-Porygon2, or just a synchronicity of ideas.
So, I'm not gonna dock points for copying Mr. Donuts, because apparently Porygon2 came first. And I think if you just colored it the same pink, white, and blue, it would be a better design than the awkward, ugly Porygon2 we actually got.
Overall: 7/10