Woma is in the spider complex and can sometimes cause wobbling so that may be why some are avoiding it.
The only real controversy with hypos that I'm aware of is that not all lines are compatible. And you need to be aware of what line of 'ghost' you're working with.
For example, most hypo and orange ghost lines are compatible. But I heard that green ghost and orange ghost may not be? So to be safe, try to keep to one line of hypo.
Desert ghost is not compatible with the other lines. Which means you can end up with double het hypo and desert ghosts.
Desert is as stated, a different and unrelated gene where the females are prone to eggbinding and other reproductive issues so it should be avoided.