Can he spend a couple weeks with Pierce in a camp on drawing fouls? Everybody gives a ton of Pierce comps on him already and Pierce was in the top 10 drawing fouls from his third year in the league and it always seemed like selling the contact was his effective strategy. I don't think it's a great look or effective for Tatum to be arguing with the refs like he was against CLE.
Pierce did it early in his career, too, though he was overshadowed by Antoine Walker on that score. Later on, Pierce developed a little routine with Mike Gorman. Before every game, he'd give Gorman a hug, and Gorman would tell him the names of the officials.
I'm not worried about Tatum's complaining...yet, and he is already one of the better forwards in the league at getting to the line. (Where he can really stand to improve is in finishing through contact.)
Here's an interesting comparison between Tatum and Brown based on the stats at Cleaning the Glass (which exclude garbage time minutes, so the numbers may not line up exactly with NBA stats).
Brown was fouled on 13.6% of his shot attempts, while Tatum was fouled on 12.7%. Falk has Brown classified as a wing and Tatum as a forward. Among wings, Brown's 13.6% puts him on the 89th percentile (that is, he draws more fould per shot than 89% of wings). Among forwards, Tatum's 12.7% puts him at the 90th percentile. So they were both elite at this skill, with Brown very slightly ahead of Tatum.
Tatum is a better free throw shooter than Brown. Tatum shot 83% from the line (69th percentile among forwards), while Brown shot 64.5% (7th percentile among wings, a true weakness in his game).
With all of that said, Cleaning the Glass also tracks "And 1 percentage", the percentage of shooting fouls drawn in which the player hits the free throw. Here, Brown is way ahead of Tatum. Brown converted an "And 1" on 25% of his shooting fouls (62nd percentile among wings), while Tatum only converted on 17.1% (a low 22nd percentile among forwards). Even Semi Ojeleye did better at this particular skill 25.0%, for 56th percentile among forwards.
To make an and 1, you need to hit the shot
and the free throw, so Brown's success here (compared with Tatum) is most likely about his ability to finish through contact.