The Suns have a roster full of guys that aimlessly chuck up 3's, so Ayton's inability to shot from beyond the arc is actually a blessing for them. Regardless, if they hit on their high draft pick next year and bring in a legit veteran point guard in free agency, they should be in decent shape.
I'm not nearly as optimistic about the Cardinals. Rosen has serious potential, but he's essentially playing with 1 arm tied behind his back right now. Their offensive line is an abomination, they have no playmakers outside of David Johnson (Christian Kirk could end being decent, but I'm not sold on him yet), and while he was thrown to the lions with that largely talentless roster, Steve Wilks has done a pretty terrible job in his 1st year at the helm. I fully expect them to deal Patrick Peterson for a couple of draft picks in the offseason so they can free up some cap space and try to jump start their rebuild.