For what it's worth, the chatter about how Tatum can't possibly play the 4 and it will stunt his development - I don't think playing the 4 in our system means rotating between the block and high post. Guys will be all over the floor, Tatum will play at the top of the key, corner, wing, some time in the block or high post, etc. He'll match up against the opposing 4, which in many cases is not exactly a banger. Quick review of starting PFs in the east last season. I starred the names I thought were clearly "more of a traditional PF" than Tatum:
MIL: Giannis/Middleton, depending on your definition
TOR: Pascal Siakam
PHI: Tobias Harris (borderline)
BKN: DeMarre Carroll
NYK: Lance Thomas*
IND: Thaddeus Young*
DET: Blake Griffin*
CHI: Lauri Markkanen*
CLE: Kevin Love*
ORL: Aaron Gordon*
MIA: Kelly Olynyk (right..??)
CHA: Michael Kidd-Gilchrist
WAS: Markieff Morris*
ATL: John Collins*
On that list, names with the asterisk - not a lot of winning teams. Orlando, Detroit, Philly and Indy were the playoff teams that featured a "more typical" PF - and still, not really. Gordon is flawed and is more of a 3/4. Thad Young is a 4, but he's 6'8". Harris was on the wing jacking threes. Blake was running the offense and also shooting jumpers.
The PF position is not what it used to be. And with defensive rotations, there aren't going to be a lot of 1-on-1 post ups where Kevin Love is feasting on Tatum in the block. Love is probably the nominal center on most lineups, for example. We need a big body/rim protector in the starting lineup, at the 5. I don't care about the 4.