That's a bummer.
I didn't even try it with moonbeam. That spells feels like the indoor lightning bolt for sure hehe, except we get to choose where the bolt is striking too. I had fun with it.
I trried the Flaming Sphere a few times, but it felt a bit wonky and kept getting disrupted. Seems like would have been more fun if done in a similar way to the moonbeam instead of as a summon for that one.
For wild shape, I always pictured the shapeshifted animal or elemental form as being similar conceptually to the conjuring or summons version of the spells. Like as if it pulled an actual animal from nearby into the Druids space for their mind to inhabit. Maybe the druid's normal physical body is phasing into some other space or nature plane, while there consciousness remains to enter the animal directly. Or their disembodied mind can manipulate the nature magic in the zone like a puppet master while that's happening too. To me that just seems like a more fitting explanation of why the HP works as it does, and gives a sort of logic to the animal forms available, as opposed to like a polymorph transmogrify into anything you can think of or that you've seen before with the right CR. But that's more like a lore or supporting explanation thing in my head I guess hehe. Wink at GOT " but backwards!" where it's the bodies teleporting to the wherever the minds were located rather than vice versa. That sort of works. Maybe the bear mind is hanging out in the human's body during that same time, just sort of chilling wherever the bear was called from, maybe down by the river lol. Anyhow, that's kinda how I pictured it explaining how the class features persist. Basically the druid becoming disembodied or sending their body somewhere else, while controlling the nature magic in the room + the called animal that they brought in to inhabit. But anyway, yeah, it would be cooler if we retained the class features and ability to manipulate the stuff that's already in play, whether lightning or flames or moonbeams or whatever