... made have been ...

[Odessa Dawn]

​

"I really thought they would go further," says the former government advisor. "A lot of people thought they would appoint a prime minister, but most of the changes they made have been cosmetic." This source is by no means a radical -- he believes the activists sentenced this year "got what they were asking for."

More: Insulting the Sultan in Oman - By Peter Salisbury | The Middle East Channel

We had better use a comma after made so that the poor readers like me could understand that made refers to changes, hadn’t we?
​

 

[emsr2d2]

​

"I really thought they would go further," says the former government advisor. "A lot of people thought they would appoint a prime minister, but most of the changes they made have been cosmetic." This source is by no means a radical -- he believes the activists sentenced this year "got what they were asking for."

More: Insulting the Sultan in Oman - By Peter Salisbury | The Middle East Channel

We had better use a comma after made so that the poor readers like me could understand that made refers to changes, hadn’t we?
​

No. We don't put commas in sentences so that non-native readers find them easier to read. We put commas where they belong. That sentence doesn't need a comma.