Agreed, in his own comic Strange is a one woman man. I think writers thought a way to spice him up to attract more of an audience is to have him be a playboy, but that doesn't work for a person who is supposed to be centered to be at his optimal power.
I kind of hope they do break Strange and Clea up, if he gets his own book. So they can show them trying to move on, but then each being drawn back to the other. Plus deal with the difficulties of their positions. Strange's priority will always be this dimension, and it should be. Clea is rightful Queen of her dimension, and it should always be her priority. Both characters have strong enough personalities to deal with these priorities and find a way to make a relationship work. A nice courtship is what would be nice, they've been together for a long time, but things have happened, like the War of the Seven Spheres. Clea being ousted from her dimension. I would like to see both those stories explored. The impact it would have on you.
I never liked it when Clea was the damsel in distress. I kind of liked it when she was there to help Strange as an ally, not a liability. This couple, to me, more than others, has the greatest ability to be actual equals without diminishing the other, in the hands of a good writer.
Wishing big.