Just listened to Fedor's hour-long podcast. FWIW, here are the takeaways.
1. The Cavs can be a formidable team next year just by standing pat and adding Sexton. They won 44 games last year despite having some of the worst injury luck Fedor has seen. They could have won 50+ games with average injury luck.
2. There's reason to believe Mobley, LeVert, and Okoro will be better next year, plus they add Sexton. They also have the 14th pick.
3. The five-man unit that management really wanted to see was Garland, LeVert, Markkanen, Mobley, and Allen. Due to various injuries they never saw that unit until the Atlanta play-in game. In 24 minutes that unit had a rating of +17 points per 100 possessions. Fedor described that unit as "awesome".
(And that was the first time they were on the floor together. Imagine if they were getting 24 minutes a night!)
4. The Cavs don't feel they saw the real Caris LeVert after the trade. They expect him to be better next year.
5. So with better injury luck, improvements from some of the young players, and the addition of Sexton the Cavs should be a better team next year even if they make no personnel moves other than the draft pick. However, you can't have a Championship team with your point guard as the biggest piece unless his name is Doncic (who is a PG in a wing's body) or Stephan Curry (greatest shooter of all time). The Cavs will probably not be Championship contenders until Mobley is ready to be the main piece.
6. Fedor would match any offers to Sexton up to about $18 million. If he is signed for next season they could trade him or LeVert, or have Sexton come off the bench in a Jordan Clarkson role. The Cavs can go to about $21 million before eating into their mid-level exemption. They may need the full exemption to sign a decent backup PG.
7. The Cavs desperately need a backup point guard who is a playmaker and a 2-way wing. The top teams have 2-way wings; Jimmy Butler, Jayson Tatum, Kevin Durant. However, the Cavs do not have a "centerpiece" for a trade. The hard core is Garland, Mobley, and Allen. Nobody else on the roster can bring them a quality 2-way wing.
8. As for a starting 2-way wing who will "make a difference in a post-season series", these guys are just not available, especially to a team without a "centerpiece" to offer. You won't get one for guys like Cedi and Windler. Fedor did mention Jeremi Grant of the Pistons but did not suggest any names the Pistons would take for him.
9. As for a backup PG, Mike Conley of the Jazz is a "very, very interesting name". He would fill the Rubio role. He will be 35 next season and will make $22.6 and $24.3 M the next two years, so it would have to be a trade. Goran Dragic is a free agent and is another possibility.
10. Kevin Love would be a "mechanism" to get involved in a trade for a higher priced player like Donovan Mitchell (if the Jazz decide to "shake things up") or Tobias Harris. IOW, it would be Love for Mitchell to make the money work and then the Cavs would add in what the Jazz want for Mitchell. Love has a very valuable expiring contract if the Cavs want to "take a big swing".
11. That being said, Mitchell and Sexton bring the same type of game to the table, so would the Cavs be that much improved with Mitchell or Bradley Beal? Fedor doesn't see them trading for a scoring 2-guard like Mitchell or Beal.
Summing it up, the Cavs can stand pat and with better injury luck field a "formidable" team next year with the addition of Sexton and improvements by LeVert, Mobley, and Okoro. But until Mobley develops into an All-Star and the team's dominant player they are not equipped to be an elite team, not with a point guard as their biggest piece. They need a Jimmy Butler type wing but don't have the trade centerpiece necessary to get one.
My suggestion: Make a deal with a team to trade our #14 pick for their veteran backup point guard (somebody younger and cheaper than Conley). We have to make the pick so the team would tell us who they want when we're on the clock.