Maybe something with that Ursaring beauty you drew?

doubling that

You kinda already do that by showing the nipples

ariados, maybe?

Ghaaastly.

I'd go for a Lopunny+Gulpin Fussion! X3

How NSFW are we talking?

Actually, you raise a good point. In an earlier conversation I had with Steve, he mentioned to me the following:
"If it has vagina, or penis(don't draw that at all), sex, anime handholding [it's] NSFW to me."
Not sure exactly how deep into this rabbit hole Steve's willing to go, but I'm all for the results, whatever they may be.

Zorua

I said it on Twitter, I'll say it here:
It's time to unleash the horrors contained within Beartic's box.

A huge tiddied Samurott gal…

That hisuian Growlithe would be a good one.