Sidibe, Washington and Brissett are not "returnees". They are incoming players who have NO EXPERIENCE. Chukwu probably belongs in that category, too, because he didn't get to practice for most of this past year because of his eye trouble. Moyer had the medical redshirt and didn't look in shape before his foot/ankle gave out on him. He didn't get that much practice time either - missed half the season, roughly, before he started practicing again.
We have 3 guys who have played in the system who are returning. We have 2 guys coming off medical redshirts, and we have 3 guys coming in, two of whom are promising, bouncy front court guys, but again, they have never played the zone. The other one, Washington, was not even our 4th choice at PG, and probably is not an upgrade on guys who couldn't really make it here - like Kaleb Joseph and Frank Howard.
You can be glass-half-full and I can respect that. You want to be optimistic about next year, but we had way, way more talent on paper coming into this season than we will have next fall, unless we start harvesting JUCO All-Americans or under-the-radar prep players (like Taurean Thompson, in fairness) and 5th year seniors who have done great and want to play in the ACC between now and then.
I saw that Huggins made a recruiting trip after winning an NCAA game, rather than going home and scouting the next opponent. I wonder when the last time was that JB was in a high school gym looking at a player.