We can compare a lot of new sets with old sets and we can see some big differences ( mostly new sets being worse than older ones ) why is that? Only reason I can find is the following:
They released Union Officer, they made it very OP , the lucky players got their hands on it , some spent even thousands and upgrade it , in short UO destroyed fort battles balance, they then introduced another broken set Cortina , they realised this time that the balance was even worse than before and they nerfed Cortina and buffed tower bonuses , too late , UO already did it's job , tower bonuses and Cortina was the cherry on the top.
Moral of the story , they realised after the introduction of UO and Cortina got so much backlash they now fear to release a strong/OP set so they won't have the same backlash, guess what though, you already have the backlash for not releasing something good for the past 2 YEARS , 2021 was by far the worst year regarding sets , the only good set was Josephine for duels , all other sets very bad or mediocre.
InnoGames should understand that it's possible to restore the balance by bringing back the old tower bonuses , leave Cortina as it is or nerf it a little bit more ( not needed though if towers get fixed ) , introduce a set worthy of UO if you don't want to sell it again and finally have a good set that can rival cortina in attacks , you did the mistake of the tower bonuses , the majority if not all fort fighters want that bonuses to either get lowered or get back to where they were.
Then when you release new sets , you don't have to make them OP but just slightly better or very slightly worse , not worse by a mile or worse than a 2017 set , come on...