There are players who do not think it is fair that players who played from the start in w2 come to w1 in 2021 with all their castles and troops. This is because the first players have a big lead over the players who started later in w2.
Perhaps it is possible to create a speed world more often? Maybe have each year a speedworld? One in which everyone knows in advance that a castle ( castles? ) and some of the troops at the end of the world can go to w1. Novice players can first start in that new speed world and transfer everything to w1 at the end. Players who have lost many castles (and troops) in a war in w1 are given a chance to recover quicker. Players who sit at their maximum number of castles can choose whether to take only the golden castles and some troops or discard of castle in w1 so the new castle will fit. The move may coincide with a period of peace during Christmas or New Year.