I wish they'd do something with the old regions.

I play a game called Guild Wars 2 and it has the same problem. They have paid expansions with maps so no current story goes back to those cause they don't know if people have access to those areas.

Same with Genshin. Thigh instead of own, they don't know if people have completed those areas. Can't tell them to go to the middle of Enkonomiya if too many people haven't even opened the map.

It's a shame honestly. Some of these areas are awesome.

The only real solution to this the FFXIV model where every expansion plot is required to do the new one. So you know everyone has these areas opened up and completed. But that's unrealistic for this game at this point.

There was one year where they added temporarily new treasure chests in Liyue for Lantern Right. I hope they do something similar for this year.

I don't know about this, but one thing I personally dislike is the lack of "purpose" for exploring areas. Take the sumeru desert for example, if it weren't for the world quests or reputation + primos, you have no reason to ever visit them, since its not featured on the AQs. Exploring for the sake of exploring is boring.

We just went to dragonspine for an international race event

In 5 days Liyue is getting Lantern rite

In like 40 Mondstadt is Getting "Windblume"

Every single region has yearly events, they just simply cant have an event on every region for every single patch, nor they can just add more stuff for the sake of adding more stuff to do on older regions on every patch, specially if compases either do not work(dragonspine) or simply use the old model(every other non Nod Krai region)

Games are meant to be completed, delaying the inevitable is just a bandaid fix that doesnt solve anything

This is a byproduct of lack of endgame content. You can't populate the world forcibly without giving players something meaningful to explore or complete.

While I understand the sentiment, I don't really think this is something that would be feasible to do regularly.

Stuff like chests, Seelies, puzzles, and time trials are basically impossible to add unless they want to make every area super cramped. I suppose it's possible to make new ones appear only after certain ones have been cleared already, but that's a lot of effort for a really small change. There are some areas where they definitely could add stuff (northern coast of Sumeru, for example), but besides them this would just be too much work for too little gain.

However, I could see new quests being a reasonable possibility. There are many areas that have no quests in them where they could make some. I also think it wouldn't be too troublesome to unlock new quests after old ones have been completed. The quest system already deals with stuff like that frequently, so it isn't like they'd be adding an entirely new mechanic or anything like that. It also helps that quests are far more impactful than a couple chests, so the effort that goes into making them would be far more appreciated and worthwhile.

I do have to wonder whether it'd be better to add some kind of notification for players that new quests have appeared or if they should just let players stumble across them on their own. There is a certain magic to finding new things in places that you've already explored, but there are also a lot of players that strive to 100% complete every area. Constantly having to go back and check everything again on new updates would probably get tiresome for them. Or perhaps they'd enjoy it? I'm not entirely sure.

One other thing I'd like to point out is that while the majority of the maps may end up useless to some players after they've completed them, it should be noted that things like domains, fishing spots, enemy farming routes, and material spawns are all a part of the actual map. You never know when you'll next get a character that needs a material that you can only find in Inazuma or Liyue. Of course they could extract all of these things and put them in one easy shop where you could buy everything all at once, but that wouldn't be very fun, imo.

TLDR: I'd like new stuff too, but trying to add things in a sensible way is difficult. Also, you might not realize it until you need them, but the map has a lot of necessary materials and domains littered all over it. Simply removing locations would severely impact the way we gather resources for characters.

I wanted older regions to refresh old treasure chests periodically with junk artifacts/books and mora (no primos). It would give us a reason to revisit areas to get much needed resources.

I do wish the expanded regions were part of the leyline rotations at least. I used to wish for dailies too, but they've practically removed the need to do any dailies.