Last season SJU's defensive and rebounding shortcomings are the main areas requiring improvement in order for them to play in the post season this year but the lack of Yawke's ability to make a twelve to fifteen jump shot is another major problem that is going to require significant improvement.
With a lineup of Ponds, LoVett, Bashir and Simon who all have the ability to penetrate and either take it to rim or kick it out for an open jump shot you cannot have Yawke's defender basically ignoring him and staying in the paint discouraging any penetration. By the last third of last season Yawke had lost all confidence of making an outside shot and was not defended.
Either Yawke or the player who replaces him has to have the shooting ability to at least keep the opposition somewhat honest.