The First Amendment states that, quote:
"Congress shall make no law respecting an establishment of religion, or prohibiting the free exercise thereof; or abridging the freedom of speech, or of the press; or the right of the people peaceably to assemble, and to petition the Government for a redress of grievances." (U.S. Constitution).
First, we must understand just exactly what the First Amendment covers. The Original statement covers the establishment of religion, which played an important role in the creation of the United States. Many of the early settlers were persecuted religious groups that moved to the US for religious freedom, and the US sought to continue to protect the freedom of practicing their religions. The second part protects the freedom of speech, allowing for the ordinary citizen to say what is on their mind, and their opinions, without needing to worry about having any retribution from the government. The third part protects the written version of the opinions, and extends to online presswork as well. The fourth part allows for the congregation of people groups legally, without allowing the government to break up groups. The last part allows for the US public to be the check and balance to the government as a whole.
As these simply covers everything that we need, as well as having the Amendment process that allows for changes, we can keep the amendment exactly the same. The only changes that would likely be made would be for technicality, and would not be substantial, if even needed. So, yes, we can keep the amendment exactly the same.