Feel this thread got hi-jacked by the Harden rumors to Boston, which seem far fetched.
I think the more intriguing idea would be to trade Kemba for the 4th pick and Porter, and then package 4th and Porter to GSW for 2nd pick.
why would GS want Porter? And frankly, I think Porter would work well in Boston. 4 and 14 might be enough to get to 2, especially if GS isn't really interested in one of the players and they don't get any other interest.
That said, I have no idea why Boston would trade Kemba Walker for draft picks. That just doesn't seem like a smart or good move to make. You can justify moving Walker if it leads to someone like Harden, but you can't if you sell your recently signed max FA for draft picks. It is just a terrible look and you can't do things like that.
You move up to 2 to take Lamelo Ball, which is why you don't need Kemba.
Porter would actually be a good fit in GS. He would fit very well into their system. They are trying to go back to win a championship this season, not to stock pile rookie contracts.
You want to win now, which is why you tend to propose trades that make us better today, by mortgaging our future (e.g., you would probably trade Brown and Smart and picks for Harden, right?) I see this team's future longer term; let's play well now, but build for the future ( 2-3 years from now), when our best players are peaking.
Lamelo Ball
Smart
Brown
Tatum
Theis/R Williams/other serviceable big.
That team in 2-3 years will be very competitive, as Lebron finally ages, and guys like Harden are declining.