It was wonderful. It brought the magic of the Holiday into my home when I was 8 years old, and has had a lasting impact on my daily life since the late 1950s. I can't speak for all, but the Jews of America before and after the War kept a very low profile, lest we offend the goyim, with our "Jewishness", with our differences. That low profile, that slavish fear of offending the "others" lead to a lot of people going into ovens, when Roosevelt could have been bombing German train lines, but I digress. The beauty, and the simplicity of the Maxwell House Hagaddah brought the holiday out of the Yiddish-Aramaic incomprehensible orthodoxy, and gave it to a very secular group of people. Decades later, during the early 1990s, as the Russian Jews were coming out, I used the Maxwell House as a blueprint text, with Russian translations, to write my own Hagaddah, to teach as many people as I could in 2 nights what I had grown up with over 4 decades. And you know-it worked! To see people who have had rocks thrown at their children, who knew of the Passover Seder but never dreamed they could ever participate in one, suddenly experiencing the freedom of America and participating in a ritual that their grandparents and greatgrandparents celebrated is as close to a modern day miracle as you can get. Certainly it has been for my family. I have added talmudic tales where appropriate, I have added verse from the Torah to the Maxwell House story. Pesach is a living, breathing story of Freedom, with roots going back to the Babylonian exile, and to lose sight that this is a holiday of Freedom, certainly when contemporary politics tries to enslave us with the security that comes with being slaves to a higher power would be tragic. The message is as fresh today as it was 2000 or more years ago. And just as rituals were added to the service well after the fall of both the first and second temples, they will continue to be added, and rightfully so.
THIS is the beauty of the Maxwell House Hagaddah. Think of it as your first primer, when you were learning to read. It isn't the ultimate book, but it opened your eyes, or at least those of my family.
Chag Sameach! And Next Year In Jerusalem!