Uunat in Crucible of Storms is called "Harbinger of the Void." The same raid has a quote from N'Zoth:
Since Titans are little star circles that turn into metal, and curse of the flesh made metal beings fleshy, maybe he planned on dying as a distraction while Xal'atath goes to corrupt Azeroth.Receive now the greatest of all gifts. My dream has become your own. The circle of stars made flesh.
My personal wish would be for racial art assets to change for the races that have defined unique technology.
And/or
Full set of customization for a mech and/or technology.
Though I could also see artificer using most if not all of the races technology together. (Kind of like how Evoker is all of the dragonflights together)
Maybe they’d be split up by spec for main themes (while still being able to use other specs tech obv)
Goblin: DPS, Gnome: Tank, Draenei/Elf: Heal (or DPS support)

Pet based would be ideal.
One spec in a mecha, one spec with a pet.
In my ideal world we would have both a mech spec for DPS and one for tank. And it would be fully customizable. But it would be way too much work.
The Argunite crystals that the Draenei used to power their mechs on Argus are just the Argus version of Azerite. BfA also had a lot of Azerite + Technology.
If we go underground, it would make sense to have more of that.
Im pretty bummed with the 3 season expansions too though.
They changed the formula on us out of nowhere and never specified, it was forgivable in Shadowlands because of Covid and work from home and stuff, but to do it again in Dragonflight felt bad. I know its their game and they can do whatever they want, but they also need to communicate major changes like shortening expansions or changing cadence. This is on the extreme side, but who is to say next expansion we get only 2 unique raids and they give us 2 seasons of fated? That's objectively less content.
Just like if we don't have the expansion out by Summer, that's objectively less content we have for the same box price/amount of time we would've previously had a whole new raid, tier, system, etc., unless 10.3 is secretly coming and they (weirdly) didnt want to confirm it??
I don't think they intended to make Dragonflight as short as it is with 10.2 being the last major patch. A while ago there was a post on Twitter by a dev talking about due to staff turnover they're having to make crisis maps of what they can and cannot ship. Unfortunate, but the industry is turbulent at the moment to say the least.
I don't think so either, but at some point it kind of feels like... Why not just be transparent about it and then work on how to address it? Whether its polling the community to see what in-between content we want, or trying out some funky design thing they've wanted to experiment with, or just telling us. Cause if we have to wait til next november to see an expansion and its a year of no new raid/pve content besides fated and some quest... I'm gonna fall off the game pretty hard unless we get some crazy/fun experimental stuff or some good filler