This means that Kabongo could be competing with Tony Wroten Jr. and Tyshawn Taylor for the next PG off the board. Even NBA.com has Wroten being drafted before Kabongo (only by 2 spots, but still).
Also, just because their is a lack of PG depth in the draft, does not necessarily mean that every PG's stock will rise. Teams could still look to fill other needs, especially due to the number of PGs that have been taken in recent years.
This all being said, unless he wows during workouts it seems his ceiling in the draft is probably early-to-mid-20's?