Next Gen, it seems that Gen 6 Pokemon will be viable for Regional Variants.

So, let's speculate - which ones and what type? How about Regional Evolutions?

An Inkay line that's basically the original ones upside down would be neat. A Dark-type removal for starters. They could have a Future Sight-induced evolution based on the Terasquid and Tanks that can still move after being flipped, with an added Steel typing.