It is so frustrating not to get more communication on such a huge issue to the community. I posted in the thread on the general discussion board, and I'll put it here too. We finally after 2 weeks got a new member. Used to be 15 minutes at most if we dropped medals.
We also had our longest wait ever since the start of wars for a 35v35, it took hours and hours to find a match, I can only assume its because of this exact problem and alliances are shrinking.
Oddly enough, we looked up an old alliance that some of our members came from. The leader is 200 days inactive, there are no coleaders, and 75% of the alliance is 150-200 days inactive too. However, they somehow filled up to 48 people and have about a dozen new people filling their ranks. I am guessing because of this new logic thats built in? What are you doing nexon? You are hurting the active alliances keeping this game alive, and you are delivering awful experiences to people looking for a new home in the game. There should be nothing higher priority than this to fix. Its baffling.