One major item:
Similar to Yeshiva tuition, money should not be discussed until after the wedding. Furthermore, the parents should not discuss with each other what they give, as it is neither sides’ business how much the other gives (or doesn’t). As an extension of this, only the couple should discuss how long they will stay in Kollel, not the parents, who would be limited to checking out family & personal issues.
Get the money out of shidduchim and you will see many more of them.