Modern arranged marrages can be more like what a matchamker would do anyway. It's just that usually it's the parents who are doing the work of matchmaking. For people who don't want to have to go through the ordeal of dating, it can be helpful to have an outsider's input on who might work with you.
If we are getting a pack that focuses on weddings then I want the same thing I always want from The Sims: varity. I want various types of ceremonies, I want arranged marriages, I want internet profiles, I want poly marriages, I want formal affairs, and someone dressed up as Elvis able to officiate. Options. Options. Options.