As it looks right now, There could be 3 transcendent players with possibly more. The three transcendent players to me are Marvin Bagley (I read this morning where he applied to be reclassified so he can play college ball this year and he will be a stud based off of the games I watched him play), DeAndre Ayton-Can shoot, rebound, and block shots (He may be the best fit for the Celtics and probably my favorite), Michael Porter-He may be comparable to Durant. (All around game and a stud from all three levels).
Bamba and Doncic may be transcendent players and you never know who else may rise up like Knox (watched and read exciting things about him) and maybe Sexton. Things can change a lot in a year so who knows what changes will take place but if everything lines up the Celtics could be a super team in 2 or 3 years.
Here is what I hope happens:
Center-DeAndre Ayton averaging 20 points and 12 rebounds with a couple of blocks
Power Forward-Jayson Tatum averaging 23 points and 9 rebounds with good defense
Small Forward-Gordon Hayward averaging 21 points and 7 rebounds and 7 assist
Shooting guard-Jaylen Brown averaging 14 points and 5 rebounds with good defense
Point Guard-Marcus Smart averaging 13 points and 8 assists with lock down defense
Bench-Zizic, Rozier, Ojeleye, other first round picks
Obviously this is 2 to 4 years in the future and I'm dreaming and I am assuming a lot of changes such as Isaiah no longer on the team but the future looks bright.