I would be all for !!!
I use the first name field but title+name easily get too long. So "Baron Charlopold" is simply "B.Charlopold". For maiden name I just add first letter after the first name. Full name is never a possibility, so a field for this would be great, too!
In my settings "Lady Cassandra Beatrix (von Kapperzoon) de Rummeldwarf" would typically be something like "L.Cassandra B. vK" + "de Rummeldwarf"
Also would be great if we could somehow brand a sim as the main heir. Not necessarily in text, there could simply be a color code or a small dot next to name, etc.