Rand is hardly likely to give the immense political clout to be gained by his kneeling, to Fortuona of all people. He has made it clear that he sees Elayne as the best possible political "successor" to him, by wanting her to take over two of the nations he "conquered". His children from her will be the heirs to the throne of Illian too (which I'm surprised Elayne never brought up).

As for a channeler pan-national successor to his role, he seems to have picked Egwene. I doubt he wants Aes Sedai to have political power like they currently do, and he may work to change that, but by manipulating Egwene into tying the nations to her, he has set her up to lead the rebuilding effort post-TG.

Now, Fortuona will have a place in this post-TG vision of Rand if they ally, but I doubt he will be eager to see her lead it, with things as they are. The decision probably won't be his anyway. Elayne has made moves to solidify her position very well, and the White Tower will probably be behind her fully.