I have a feeling that - at least in Hussie’s mind - he created the lands with one part relating to the person’s aspect (ex: WIND and shade, heat and CLOCKWORK, LIGHT and rain, frost and FROGS), with the other part relating to their big quest they needed to complete (meaning that the sand part in “sand and zephyr” might be hinting at a sandstorm Tavros would need to control/all of the consorts on “dew and glass” have turned to glass and Feferi needs to revive them). Idk but It’s cool to theorize!
Yeah, one part is definitely related to the Aspect, however the other part heavily depends. For example, for John’s, he does have to get rid of the clouds and free the Fireflies, tying his Quest to Shade, but Dave’s Quest originally was conceived as amber gumming up the Cogs of his Land, and then completely dropped in favor of a more Excalibur-esque sword-retrieval and Hephaestus-talking sort of Quest. You could argue maybe he was supposed to use heat to remove the amber? But at the same time, that doesn’t sound too Knight of Time-y, and the place’s already blazing hot with lava everywhere.
Tavros, we don’t know his quest exactly, but it seemed like he was making progress by communing with the Underlings and solving puzzles. Communing with a lot of monsters was honing Tavros’ psychic powers, and it fits his role as a Page, to have a bunch of things serving him advance his personal quest. Unless there was something to do with, maybe, using wind to power the windmills in his Land and produce energy to solve other puzzles, the ‘Sand’ part of his Land still seems wholly aesthetic. Feferi’s Glass does however likely have something to do with Agency- Fishes are trapped, confined in glass bowls, so that’d fit the theme of breaking through for a Witch of Life, manipulating the agency to be in or out of the glass bowls. That being said, it’s also kind of a moot point because, you know, Feferi is fucking RIPPED and could simply jump several feet through the air directly from her Hive to the First Gate, from inside water.
Also then you have stuff like LOLCAT, and let’s be fair, Nepeta’s Land is super cute, but it’s pretty much a meme land.