I know, also I am not saying we need the exact same thing, what I had in mind was just to point out this idea. Other games probably have similliar content with dynamic events. FireFall had ( I know it died long ago), Skyforge has something like that, seems neat but the rewards are "meh" and almost nobody participates in that, there was something like dynamic events long time ago in Tera Online, not sure if it's still there, Abyss stuff or something like that, gave players parts and/or resources to get high end gear and resources for special bonus stats items, there were always crowds whenever one of such "events" popped somewhere.
About the "Squad-Link" yes, I guess it may work like what I have in mind but what will it offer in terms of a reward. Moreover, it probably will be and won't be that dynamic tbh. You use "Squad-Link" and hope someone needs your help or answers your call. Also, I believe IT will be thightly connected to Railjack resources and Reputation of some kind.
If Thermia resources were needed for weapons or upgrades in large quantities, interest in this aspect would be greater.
Why Orbs, Arbitrations and Eidolons are so popular, bcs resources from these can be used for many different aspects of the game. Moreover, these contents are fun, at least in my opinion.
What DE has on Orb Valis are places waiting to be filled by all those enemies that are actually there, they could create big Jackal with hard hitting attacks but with weakness with good amount of Valis resources that drop from him.
We have tons of relics, cosmetics, resources like tellurium, cryotic, oxium. We have Rare Mods, Rivens, Kuva, Arcanes, Forma, Prime Parts, Toroids, radiant relics, archwing &gun parts, reputation, bah even Ayatans and Endo.
We have so many different gamemodes and even potential for Bounty objectives.
What I see would be events like ghouls, thermia rotating each week, 3 or 4 events, each week different, different objectives, different rewards, some challange maybe. Each week more alternatives to tons of existing grind we have either way.
Squad-link may offer that I hope so but will it make Valis "alive"? Nah, I don't think so! If it really big effort to code all that I won't complain anymore, but if there's slight chance to have such events next to Bounties AND Squad-Link. Damn I want that! I could fly or k-drive all over Orb Valis every day, every week and have fun grindig the same stuff I actually did till this moment AND maybe something EXTRA.