The new hover scrub with big thumbnails in icon view would be certainly useful if it was implemented in a way that works. As it is, it's useless. Unless your total footage is about ten clips, you end up with dozens or over a hundred clips with no way to sort them out, unless you love wasting time and you drag them all around in the order you want, which I'm sure very few people are willing to do.
So why does Adobe bring in a new feature, even makes tutorials about it, when for most people is absolutely useless? I don't get it.
Oh, and before you nag me about filing a feature request, don't. I already did it, and this is not something anyone should do. Feature requests should be for new ideas, not a crutch for Adobe to rely on to release new features half way, and then expect people to nag them about it to finish them.