If I'm Cleveland, I'm monitoring the situations in Washington, Portland, and Toronto. Most people believe those teams will break up their star backcourt duos and hope to fetch assets for one of them (and maybe fill other needs and open up some cap room going forward).
It's possible Lilliard, Wall and/or DeRozan are moved, but I think it's more likely they stay, and it's one of Beal/McCollum/Lowry that's dealt. Cleveland could dangle #8, a young guy like Osman, and maybe a bad contract (salary), and see if that gets them one of Beal/McCollum/Lowry.
Frankly, even if Lilliard or another alpha is made available, it will definitely cost #8 and Kevin Love (at the minimum), which might be some improvement but not much considering you traded away a 20/10 big man on a reasonable 22M contract.
I do find it hard to believe Lebron stays AND Cleveland simply drafts with the pick. I think either Lebron stays and they package that pick for a star, OR Lebron leaves and the Cavaliers simply draft with the pick.