I am torn by this.
On one hand, the players coming in would definitely get us into 2nd round of playoffs next year and have a good shot at ECF. On the other hand our "IMO" Centerpiece is Marc Gasol - a player I've pined for on here for last couple of years because I simply LOVE his game.
BUT his is 31 years old, though..and coming off of an injury.
In some ways such a trade reminds me of what Danny did in 2007. Those moves produced Banner 17 and we were seemingly headed for Banner 18 until BOS/KG visited Utah in 2009...

If Michael J Fox could take that John Delorean vehicle into the future and GUARANTEE that such a move would get us by CLE or TOR and THEN get us by "probably" GSW next year on route to Banner 18 then I'm all for it. But I'm sure I'd miss the outgoing parts here.
I've grown rather attached to AB and Marcus...
Such moves would mean our "new" Big Three would be IT4, Jimmy B and Marc. I love this. As is, though, our "window" would be only as long as Marc Gasol's health and endurance.
If Marc is as productive as his brother Pau is at almost 36 years of age then I'd guess we'd have a 4 or 5 year window to contend...our window with KG/Paul/Ray was roughly the same.
This potential new Big Three is younger, though - with IT4 and Jimmy B being in their mid 20s. This could perhaps lengthen our contention window.
Would this be enough to net KD? I have no idea. But this new team would be a sight to behold especially if Marc can stay healthy.