Alternate "Campaign" mode (new adventure mode?)
Just a brief background on the Settlers game series. In the early series of The Settlers PC game, (Surf City and Settlers2+3), the game was a series of "Maps/Missions" that connects back to back until the story campaign is completed.
For example, one game had it where you landed on this map/region and you had to build up your settlers and expand your border edges by building towers and increasing your border. You take over the enemy that was also building up as well- fighting over towers to dominate the map. One game had a "portal" for the exit or finish condition of the map. In which you go to another map- via that portal and started over.
When you first play Settlers Online, you are on this island and had to clear the camps to make room for your base to expand until the island was completely cleared of the enemy. (which is what we have now for most players who play setters online).
This style of game play basically is wasted - like the fog of war and the explorer having the need to search/explore the island.
All we do now is just 'adventures' where you take troops to some map clear it and bring back loot. The economy aspect of the game comes from your existing island and really never feels like a challenge anymore.
How about a new game mode that brings back the style of what "Settlers" is about. Maybe a new story/lore theme can be a Wizard appears on your island and talks about some great danger and opens a portal on your island. Entering the portal takes you to a new island where you must start fresh. And must build up a settlement and troops from scratch and advance to the exit portal on that map and then bring back the rewards to your island. This 'new map' can have many new mechanics of its own and different resources that are unique/exclusive to the portal map that you bring back.
At least this would feel like a Settlers game.
Thanks for reading the suggestion.