I don't see BH going anywhere. She has a huge, loyal fanbase.

The show has been putting her in one front burner storyline after another up until recently. I think when her ML gets closer her screen time will pick back up again, and then after she gets back she will be front and center again.

Whether Becky is a fave of TPTB or not, there is no other character like Liz on the canvas. If you think about it, most of the other women are pretty much the same character.  They need her alot more than she needs them IMO.

Like Di said earlier, if Becky leaves GH it will be because she wants to.