I hadn't heard that about Hypo/Ghost so I couldn't answer that part. Only gene I have heard of having that issue with females is Desert, not to be confused with Desert Ghost.

HGW as far as I know have wobble issues like Spider, but to a lesser degree. The HGW girls I have, I haven't even noticed it, even when I first got them and they were pretty stressed, but I have heard from reliable sources they can have it, and not to mix with other wobble issue genes.

It is my understanding that GHI lessens fading in Banana/CG to some extent, but probably not as well as Enchi + YB complex genes.