If you can get Kyrie, you get him. Aldridge isn't even happy here. Throw in whoever else not named Kawhi. The Spurs would have a hard time fielding a true contender next year (staying pat isn't a true contender either), but Kawhi and Kyrie at 25 years of age is a of a foundation to build around going forward. The Spurs will be able to attract and address the big issue through trades, free agency, waivers, etc. if they are smart about it. Bring back Diaw to fill in next year for one.
I wish Aldridge would have worked out better but wanting to keep him over Kyrie is laughable.