The problem is multi-faceted. Brown's warts showed up a lot more last season than his first, because HCJC runs a completely different system, on both sides of the court than Stallings.
Brown was a fit in Stallings system which ideally would have two complimentary big men, and was not as aggressive on either end of the floor - played a soft man defense and basically passed the ball around until someone could jack up a three.
Despite the spin when he was hired, his teams played slow and passive.
So, Brown's feet were not exposed - though even then his passivity and off (far too often) and on motor was very evident.
But, IF Stallings was able to get a center to pair with him, he could be a PF who got a lot of weak side blocks, chipped in on the boards, got his face up shots, etc.
The problem is that HCJC uses a one in, four out on both sides of the court, and the center has to be someone who is both able to move his feet AND control the paint, particularly on defense.
That is why Kene was the starter the first month or so of the season, and as the season progressed HCJC kept going back to him. When Brown was engaged, or had a more favorable matchup like the Cuse, he would play because Kene has so little to offer.
But, when Brown was not engaged, at the very least Kene was able to move on defense, and occasionally convert a pick and roll.
Brown's warts were just a lot more glaring in a system, and with a coach, that requires players to be mobile, aggressive, play with fire, and extent on both sides of the court.
He is tall and long, and has the body, and SOME skill. But, his limitations with his hands and feet restrict his ceiling, and he has to find a way to connect with, or develop an inner warrior spirit if he is going to help this team win games regularly.