I'm not sure how the writers and producers are going to accomplish this. When Alexis 3.0 returns we (the viewer) have to remember it's technically Nicollette Sheridan behind the facade since she created the reimagined Alexis. When Liz took over the role briefly she kept Nicolette's mannerisms and ticks assuming at the behest of the producers and directors. Having another actress turn up without any of Nicolette's personality would defeat the purpose wouldn't it? It such a quandary the writers have created for themselves.
I have ideas for Alexis return, and how to re-create her character. And to solve all the mess you mention. But as I said it, I won't give them away for free. My english is bad, but I have written a 1.800 words pitch for her return. With a purpose that connects with Fallon, Adam, Blake, Cristal and Kirby. And in some ways, Steven too. And it's only a pitch.
I won't said it's good, because all writers tend to think their ideas are good. My ideas are classic soap ideas, with a twist within a twist, within a twist. But all that works, because it's
planned ahead.
Anyway, I am also earth grounded : I am a press writer in France (concepts, articles, fictions) since a decade, but I know how hard it is (near to impossible) to sell ideas and concept when you're an new
american writer. So I don't expect a miracle for a french writer to do better.