Thargoids will use this “link” to negotiate an uneasy truce before the last Titan (Cocijo) is destroyed. This will “end” the war.
Following this, Titan Cocijo will act as the “stronghold carrier” for a new Thargoid Power Play 2.0 faction. As part of the truce conditions, all nanite torpedo weaponry will be destroyed / confiscated and further distribution of such weapons outlawed. Thus - as per other PP “stronghold” systems - Titan Cocijo itself will become safe from destruction and the permanent HQ for the Thargoid faction.
Just like other powers, they will compete for control over the surrounding star systems, attempting to expand their presence. CMDRs defending other factions territories will need to prevent such progress by participating in Spire sites and AX CZs in the systems that the Thargoids are attempting to expand into.
Thus the Thargoid activities (with the exception of Titan bombing) will continue to be available “forever” as the continuous PP expansion / contraction dance plays out.
Maybe CMDRs who are so inclined traitors will even be able to pledge to the Thargoid faction for unique rewards and influence progress by fighting alongside the Thargoids in CZs and delivering occupied escape pods back to the Titan …