Starting with the ruby lifepools, they have a crazy amount of effort put in them even in this new trend of dragonriding, i think this proves devs can make equally good points of interests (like undermine) but are not encouraged to since this new form of flying makes most stuff invisible to the average player, starting from the bottom northern side, it is geogrpahically connected well through paths, meaning that it has two -"well dressed" with ruins- roads leading to the starting shore and the obsidian citadel, it also has two dirt roads, one leading to a deadend and the other leading to the river by it and the southern primalist side.
This side other than the dungeon (which is contained inside the structure) and the quest objectives, has another tight road, almost like a cliff, which above it has some flavour npcs and below it the tuskarr fishing pool area, which itself, on the other side close to the lunker sign has another road up the mountain, between that path there is a cave with a rare/ treasure and little details like birds nesting and two downward riverfalls, one leads you next to an area where lava has collapsed the earth- thanks to some elementals redirecting the flow of the river- and that second stream actually loops back to the ruby life pools, a part of it which seemed a deadend at the start ( yet still contained one of the isles lore tablets called "welcoming the first" and many singing unkillable critters around an ancient dragons bones).
Now for the lower gardens themselves, it has ton of quests, npcs and doodads that help bring life to the are and tell the story of everyday occurences just from the placement of certain creatures and items, it also has an inn to accomodate the new arivals and a flight path leading to the upper gardens of the lifepools (otherwise inaccessible especially so early in the expansion where dragonriding was a darkmoon seasaw/ glider.)
From the moment you land on the upper gardens, you are greeted with one of the most beautiful views in the isles where veritistratz also hangs (that cool sidequest guy), behind you is a path leading to the upper gardens, where the main dragonflight eggroosts are located around the structure, these eggs are tended of course and each flight has its own unique tender with dialogue (although even the number of eggs tell a story), hell one is even involved in a main quest, but that is not all because other than the roosts at the edges the area is filled with npcs doing stuff, drakonoid kids zooming around and i think all the starting dragonflight proffesion stands are located here, but as you take a closer loot the structure has a hole in the middle, hosting even more eggs and a seemingly intricate water system leading down to a nicely designed drainage, and although there isnt anything to actually do here and a lot of closed doors (it is used in the dungeon as a boss room and an intermediate break between the rest of the dungeon while also suggesting the structure is hollowed with even more eggs), there is a red whelp gathering of shorts like a pre-school.
You would think that is all it could possibly contain but no there is also the reds oathstone here, which albeit useless behind it highlights the titans water dam and all the lore implications, but it is not just lore you can find up here, this area also contains a dragonriding rune and a race route, and if you choose to follow it will lead to thaldraszus spa which leads to valdrakken, in a circular area with a titan statue and then further leads to tyrhold and its resevoir, and although tyrhold is a semi irrelevant area with scale and no interior to match, the outdoor content and the halls of infusion dungeon do a well enough job in highlight the contents of tyrhold quite well, and finally, the waterfalls sorrounding tyrhold, seemingly coming from the possibly biggest unnamed mountain in wow, reveal the now melted prison of the incarnates.
Vakathros on the other hand, the most grand landmark of the azure span, is located in a remote area, away from any real objective, if not for the primalists it would not even have any path to connect it to anything in the span, but what does it provide, well it has a lore tablet but it is so vague it provides little value, the top is part of the fast travel system of the dragon isles, so it has a teleporter for the highest point of the span, the structure itself is nearly drowned in ice spikes, suggesting it contains some kind of tundra. It is so frozen that even the dragon towers have an icy texture where nowhere else is it utilised (which is sad really because it looks amazing from up close and a dragonkin village with that filter would look amazing).
The bottom of the spire has an area that seemed to be a circular dragonkin base, now frozen and forgotten, with towers overlooking the eastern sea, on the north there is a solid mountain of what once was a waterfall, probably originating from the same mountain as tyholds water supplies, this waterfall leads nowhere on both sides. Now the southern side actually has some things going on, but it is exclusively main story content, the primalists have melted most of the glaciers where there also seemed to contain mostly waterfalls, other than that it just has a dragon glyph to the side and that is it. We never found out the reason the primalists wanted to bust it nor what it contained and probably never will, but that is not the main problem, the problem is that it exists for show, it has no real meat to it.
We can try to give it extra points by assuming that it is the source of the glaciers but the melting of the southern side has no signs affecting the zone, no lore, no treasures, no rares, and although the glaciers contain some stuff they are mostly barren, ice fishing is cool but so much more to the west its a different part of the zone, there is also a spider cavern close to it with a haunted artifact, but the cave is only used for the side quest. Traversing has no real thought to it other than the assumption we will fly to it. There is a dragon race but also again its quite more western of it, same as some rares.