Prince William will most likely become the Prince of Wales when his father, Prince Charles, ascends the throne. But, a royal expert believes he will disregard one particular trait that his father had as the heir.

According to Richard Fitzwilliams, Prince William will shun being an activist Prince of Wales, which marked his father's legacy for over 50 years. While the second in line to the throne has his advocacies and is a champion of different causes, Fitzwilliams believes that the Duke of Cambridge won't have this "activist element" more commonly seen fin Prince Charles.

The current Prince of Wales has been known to push his activism by trying to influence the decisions of the U.K. government. Former government officials spoke about how Charles would involve himself in crafting policies, when royals traditionally should not, by writing letters to leaders.

Some royal observers said that Prince Charles has been waiting to sit on the throne for decades, so he's keen on doing something that brings a significant impact. Over the years, this included involving himself in matters meant for politicians and officials. 

A spokesperson for the heir said that Prince Charles is only eager to help out communities and find actions and solutions. Thus, he wants to be involved in some of the work of the government. 

Fitzwilliams does not see Prince William going this same route. He also does not think that the Duke of Cambridge is on the same page as Prince Charles when it comes to a slimmed-down monarchy. 

Rumors have persisted for years that Prince Charles will cut the number of working royal family members when he becomes King, which means there will be less charities to partner and patronize. Such a move, however, will have its benefits and losses. Many organizations might have to fold if there are fewer working royals because they will no longer receive funding. 

Meanwhile, the title of Prince of Wales has been delegated to the first-born son of the British royal family for generations.  But, there is no actual Parliament legislation about the role except that the Prince of Wales is expected to assist the monarch in performing royal duties. 

Prince Charles, however, has to grant the title to his heir apparent when he becomes the monarch. According to the experts, this is not an inheritable title. Then, as it was in 1958, Prince William will have to undergo an investiture to officially become the new Prince of Wales.