If you can get the point across better, go for it.
Well, they shouldn’t have put the word English at the end of a line. The stress is on the first syllable, making it a tough rhyme, even if you tried rhyming, say, “wish.” It’s ENG-lish, not eng-LISH. They might have tried:
“Now we don’t ask too much to share this land of liberties,
But if it’s not to much to ask, speak English if you please.”
Although, “land of liberties” is awkward. Isn’t the correct phrase “land of liberty”? The rhyme doesn’t have to be exact. Probably the best would have been:
“Now we don’t ask too much to share this land of liberty,
So if it’s not too much to ask, speak English if you please.”