I think your last statement sums it up perfectly. We don't know what's happening in practice and the talent is respected...but NBA cred has to be earned in the NBA. The team success still remains the greater priority. We will see what happens later on in the season.
According to a reddit post I saw, it seems the deal is:
Morris, Batum, Covington, KJ Martin, 2 FRP, 2 SRP, one pick swap.
For Harden + PJ Tucker + Petrusev