The biggest difference between the two versions may be most noticeable in our modern day tolerance of more sexually explicit scenes. Personally, I look back fondly on the days when filmmakers could communicate the physical desire of their characters without taking the clothes off their performers. Of course, it should be noted that Thomas Crown, with all his billions, was still fundamentally empty and lost. His money did not buy him the peace of heart which he desired. His life, despite his wealth, became meaningless and dull, which is why he foolishly began breaking the law by stealing precious artwork from museums.
Financial wealth is never the culmination of our dreams.
It is not the answer to our prayers. It is not the final goal of a godly man or woman. Spiritual riches are found in one's heart.