I know very little about toothy flowers because I haven't messed with them a lot. I have lucked up and got a couple over the years but never pursued that line. They just never appealed to me.
Other than teeth I think the green daylily is the latest hunt in Tet daylilies. There have been green dips for a number of years so I think the Green One will be a lot easier to produce than the Blue, which I dont think anyone is close to a real Blue yet. The closest thing I have seen to Green Tets have been in Larry Grace's greenhouse, and he is working hard toward a true green that will hold its color in the sun.