I've always said I would keep Cody and have him play the field as the mischievous himbo stable stud (or experiment with him and Tracy after all, which I think PM and co. were/are heavily hinting at). I think after a very rough intro Kelly has found his niche at the show with the Q stables and the larger Quartermaine family, Mac and that whole setup. Maybe if you want something more lasting for him down the road he can become a cop or something, or maybe he just goes when it's the right time. But Sasha gotta dip now.
I think Spixie are fine in their current form, in large part bc the writing for them heavily improved in the spring months under Mulcahey and reminded me a lot of what I first liked about them in the 2000s. But given how much Kirsten has come back from the abyss of late I would seriously consider a stronger pairing for her with someone else (like a recast, single Michael) down the road.