As I've said a few times, this is what I expect a fully healthy rotation to look like:
White, Mills
Murray, Walker
DeRozan, Johnson
Lyles, Gay
Aldridge, Poeltl
In that group, I think Lyles is the weakest link. I disagree with the video's premise that Lyles is someone the team has to worry about developing. If he does, great. But I hope that the Spurs expect more from their starting four, whether it's Trey or Luka. I don't see Gay's spot to be in any jeopardy. He's better than Lyles and isn't starting because he works better as the bench scorer. If Samanic impresses, he'll start or be the backup three next to Gay. The next-weakest spot would be the starting-two. I think Pop will eventually break up the White/Murray combo. I know some folks have clamored for it and felt vindicated that they played decently in the bubble with that unit. But I think it clearly makes the team worse to start all of their ball-handlers with Aldridge and have a second unit that doesn't have a facilitator. Sure, Murray's not really that either. But ultimately, the guard rotation has advanced to the point where it makes way more sense for Walker, Johnson or even Vassell to get the nod.
This is the rotation I'd like to see:
White, Mills
Walker, Murray
DeRozan, Johnson
Samanic, Gay
Aldridge, Poeltl
That first unit has the speed, spacing and dynamism to most directly compare to the bubble unit without sacrificing size. The second unit should give Johnson more freedom to grow his offensive game, and he and Murray look like they'd make a good defensive unit.
Johnson being healthy again means Pop doesn't HAVE to start Mills anymore. I'd been under the impression that Patty would start to avoid a Mills/Jones bench back court. But now that Keldon is healthy:
Murray, Mills
Walker, Vassell
DeRozan, Johnson
Lyles, Gay
Aldridge, Poeltl
with there being a chance that Samanic could get minutes from Lyles or play the three off the bench, with Johnson getting Vassell's minutes. I know a lot of folks don't consider Sam to be a SF candidate, and I'm basically among them. But I think Pop will and even should experiment with that if that's what it takes to get Luka on the floor. When talking about a bench forward, shooting is basically the only thing that matters. I think they'd be able to survive with him there. How Samanic looks in camp and pre-season should help us get a sense of how much he could help the team this season. Unlike a lot of STers, I don't think he was that far away last year. He just needs to start hitting shots, and he can get some minutes at least.