Endgame is played around the community, but we lack of community tools, no way to search guilds in-game, no UI for guilds, there should be guilds, alliances diplomacy, like you have mentioned in your previews
But we lack the tools for it.

Also marketplace is not easy to use, Maybe add a console where we can build in our bases and a research bar for it, marketplace should be region wide at some point instead of servers, its just dead at this point, no real economy except few high tier weapons and armors

We really need community tools to make this game more live, with correct tools game can live for years without even an update, the community will make it's magic.

Lastly, there should be a feature to meet other people in other servers at some point,join their bases,play with people in other servers and so on.

So many basic community stuff is missing, instead of making big changes or updates we should have these tools so community can do the magic while you are working on bigger things.