It’s important to note that Clayton is two years older than Collier.
If Collier’s shot is indeed just broken than it’s probably WCJ by default since that’s basically a requirement for the position.
So, if Collier can learn to shoot it at >/=35% from 3 on respectable volume and 80% from the line, then I choose Collier. If not, Clayton. Teaching a person floor vision and great passing isn’t any easier than teaching someone to shoot at an NBA level, and Collier is bigger, faster, stronger, younger, and can guard up a position and switch another.
On the other hand, if WCJ gets like Steph/Dame range off the dribble then that’s almost a trump card unto itself.
Of course, you could keep both for a few years. At some point this small-ish guard nonsense we’re doing is going to have to get resolved. But we have some time to figure it out while we suck.