The original album ending, although quiet, is a dramatically effective ending. It takes guts to end a musical quietly. Nearly always producers will insist on a big bang finish, on a tune the audience can hum as they leave. However, quiet endings, when done well, can be the most effective.
We've seen the big public side to Evita's death with the funeral that opens the show. So at the end, we see the private side, as the woman dies, reflecting on her ambiguous life. They balance each other perfectly.