"They won't move back to St. John as it requires massive repair if they keep it long-term and no suites."
I heard recently that St. John has been condemned because it is, literally, sinking.
However, we are talking about TOSU. The athletic department is, I would say, "flush." At least commission a study into the expense/feasibility of making necessary renovations to St. John. You have VCA in the meantime.
VCA will always be there for hockey, Disney on Ice, and concerts. It is just a horrible venue for college basketball, in my humble opinion.