Several reports have long claimed that Prince Charles is eyeing a monarchy shake-up when he ascends the throne and becomes King. So, how will things change and who will remain as in this modern realm?

It has been long believed that Prince Charles wanted a slimmed-down monarchy when he started to lead the royal family. However, who will make it to his new line-up remains to be seen.

In his appearance on the latest episode of Daily Express' "Royal Round-Up," royal correspondent Richard Palmer talked about Princes of Wales' plan of a royal shake-up and revealed who he thought would probably "make the cut" within the future line-up.

Palmer told the host Pandora Forsyth the future King Charles and Queen Camilla would lead the monarchy. Prince William and Kate Middleton would then be the Prince and Princess of Wales.

"Their children, eventually, but we are a long way off that yet," he said. He continued that Prince George, Princess Charlotte and Prince Louis have already been out, doing some royal engagements with their parents.

He assumed that if George got into his mid-teens to late teens, he would be doing his own things. However, as he would probably continue his education full-time, the public might not see much of him.

Palmer added that aside from Prince Charles, Camilla and the Cambridges, "the jury's out really." He believed it just partly depends on when the heir apparent becomes King and the family circumstances.

Knowing Prince Charles is "very appreciative" of his sister, Princess Anne, she may also have a role under his reign. But, it remains to be seen if it will happen as things remain uncertain.

Analyst Jonathan Sacerdoti also told Mirror that things would become "very modern" when Prince Charles took the throne. The emphasis will be put on those who "command absolute respect."

The demand for responsibility and certain behaviors will be at the forefront. As Princess Diana's former husband wanted to make his mark, Sacerdoti claimed changes would be made.

Sure, he may find it hard to respond to the recent controversies that shake the realm, from Prince Andrew's scandal to Prince Harry's attacks on the family. But when he finally takes over, Prince Charles may slim down the working royals at the heart of the family.

Royal expert Camilla Tominey added that the modern monarchy would be about "commanding respect"; by the looks of it, he's now looking forward to being King. This slimmed-down monarchy is probably to ensure everyone is doing their jobs and there will be no "hangers-on."