My take on Dybala? Paulo is a natural SS/CAM and perhaps even a more advanced hybrid RF/LF, always looking to cut it to his left and curve it in(mostly one-footed), along with his excellent playmaking abilities and vision which also seem to pretty clearly suggest that. Tbh, i think he will never be able to play as our main striker in a 4-3-3 or any other formation tbf, he ain't made for that as it would just limit many of his wide range of skills, unfortunately he is neither strong enough nor much of a poacher to make it work there and as far as i can comprehend we ain't planning to use any 'fake 9' tactics just to fit him in either, so i'd rather not fall for that, if Higuain is to go he will surely be replaced by another proper striker.
P.S.: The only way i could ever imagine Dybala work in a CF/F9 role would maybe solely be under a team coached by Pep or Sarri(which imo won't happen anytime soon), tho even then there is no guarantee regarding how well he'd fare.