My sentiments are pretty much identical to the majority's, there's definitely more going on in hyperspace but the word that comes to mind is "irritating" rather than "interesting." Hyperspace storms have long been a nuisance, but at least in the past you could genuinely just put on sustained burn and ignore them. Slipstreams, on the contrary, cannot be ignored. You get sucked into one and don't correct it you're going to be sent to the ass-end of nowhere. They were phrased as being a tool for helping you get to your destination faster, but in my experience they get in the way far, far more often than anything else. It's really quite difficult to plan a route around them because you have to find them, remember where they are, keep track of their directional shifting, not to mention that they just disappear sometimes.
Which, all in all, could actually be pretty manageable if there was some method of recording and keeping track of them in-game, but as it is my short term memory is practically swiss cheese so it ends up being periodic bursts of mild irritation. Making hyperspace engaging is a noble goal but I don't think this is it and it'll need some solid iteration to become an enjoyable system, and I don't think having hyperspace just be mundane downtime was a bad thing either.
Sensor ghosts, on the other hand, are pretty sick, at least at first. I think the interdicting ones are too common and the rest are so meaningless that once the initial spectacle wears off I end up just ignoring them, but I'd still say they're pretty great. It's nice to get something like a free hyperion occasionally, even if it is possessed by the weird hyperdimensional space creatures.