I think Mello is going to have to come right in and contribute meaningful minutes at backup PG.
I really don't know what kind of contributions Ibitayo & Justice can make on our current team. They both seem like odd-men-out as we don't really run w/a 2-guard anymore. We seem to want to run w/a PG & 2 wings. Ibitayo, though only 6'3", with his 6'9" wingspan could probably fill that role. Justice however, I see as a role player who comes in and just strokes the 3.
Egner's been, to me, very underwhelming. I hope he can give some quality minutes next year. Losing Nik, we're going to be thin in the post (Zeke, Tree, Harney... Egner.) Three post players, however, may be sufficient.
Once things shake out (around 1/3rd-ish of the way into next season?) this is how I envision our rotation:
PG: Rico, Mello
W: Gilliam, Walsh, Q
P: Zeke, Tree, Harney
That's a solid 8-man rotation. All contributors. All getting plenty of PT.
I think incoming wings Kretzer (6'7") & McAdams (6'6") will both be redshirted and made ready to take over for Gilliam and Q the following year.