I just thought of this because I bought a Smilus primal male to be king on my linked account. However I noticed it's rather inconvenient that you are forced to roll a king instead of having the option of say, picking one from your den or from the den of your linked account.

Now, because of the roll feature I will need to find a way to make GB or buy some in order to retire that king. And if I allowed him to age out on his own, my Smilus would be rather old by that time and it will have been a waste to have bought him in hopes of being able to breed him.