Glad to hear that you're enjoying it! Would love to see some base pictures if you have time.
I never end up using delivery drones, even when I have them installed and even when they sound great in theory. I'm happy to hear they seem to work.
The hovercrafts at the moment can't to go over abyss by design, but it's still up for discussion. If I understand it correctly, hovercrafts in real life need some surface below them to float, so from that perspective it makes sense, but gameplay should take priority. From a game balance viewpoint, when I got the hovercraft it felt too early to be able to move across abyss freely. Plus I enjoy the grappling hook more so I didn't want to take away from its use case. On the other hand, if hovercrafts can only cross water, then that makes them a very niche tool: for small gaps you can use the grappling hook or go around, and you could always use landfill instead. There's a good case for removing them from the modpack entirely. I don't think people who dislike the grappling hook will like the hovercraft, so it probably doesn't make sense to think of them as alternatives.
