I'm actually surprised how consensual this trade is for most Spurs fans.
Spurs aren't rebuilding because their trading away their best young player and are keeping their veterans core.
They're also not improving for next year. They get a rookie who can't shoot, and even if he's a decent defender he will certainly not be able to guard at NBA level in his first year, and yet we have people proclaiming him as Bruce Bowen Jr.
If there was a thing the Spurs lacked was someone outside the big 3 who could perform in the playoffs. Hill was the only guy, now we have no one.
Basically the Spurs don't improve for next year, but also don't make a move for rebuilding.