^yes it can be, i just said the Princes because they are the next in age, but yes it could be Princess Azemah or Princess Fadzillah.
and in my opinion Prince Abdul Malik seems to be more responsible instead of Prince Abdul Azim who only likes limelight and partying up, so it would not be unexpected if Prince Abdul Malik would like to settle down!
as for Muta-Wakillah, i always loved the brunei royal and always followed them, from what i can see she seems to be not that type of person. she enjoys doing royal engagements and attend many things in behalf of the Sultan, the other sisters married are not as active as her. of course i dont know if she really wants to marry or not, but from what ive seen so far, she enjoys her life as it is, not all women want to get married^^
♫A man is not old until regrets take the place of dreams.♥