+1, try to cut some more of the CA. Other than that, I wants more pronounced ovals! Maybe you should throw an oval aperture in there just to be tricksy? ;)
It looks great, though! I hope you offer it with similar coating/flare customization options like the FF58. I wants blue flares! (Yeah, yeah . . . I know. For some odd reason, anamorphic nutters seem to treat flares as taboo . . . loose the snobby hipster attitude, the signature blue flares are cool.)
You might also putts around with other lenses just to see if you can find one or two other focal-lenth lenses that it can synch to. I know, that's a tall order, but you never know! something longer focal length might be nice for closeups, especially if it suffers from "mumps" (y'know, if you're too close, it makes faces look fat).
I just had another idea for the FF58 too. You really should get your hands on a proper blue streak filter and do another promo video with that on front . . . I've always wondered just how close a spherical could come to looking like anamorphic with a good blue streak filter and internal oval aperture mod. I suspect that all but the most stickler wouldn't notice a difference.