Howdy,
I got an idea that there could be kind of "magical time portal from another world" thing at every outpost. Actually a board where you can replay adventures or pay a huge amount of money to return to previous seasonal progress. This could fix issue with adventures not being replayable because world is changing based on them etc. and also if someone misses the season (another game, life, kids, lots of work...) They can come back and actually get the skins if they grind enough to pay f.e 1 000 000 gold and then grind through whole previous season.
