I think Konno has not much to say on decision for senbatsu announcement. He is a higher-up executive who makes the call for participants being assigned to a group along with AkiP. Konno is the one who call out the name from the result by mngt who is responsible for the senbatsu choice. He does it for Nogi, he does it for Hinata and now he does it for Keya. Captain Sugai send out a message to fans about she feels the group has stagnated and this was the right direction to take. This was also recorded on July 7 and mngt picked 7 out of 9 members from 2gen which nobody expected so soon. Add 11 trainee members and mngt will start to get more favourites. Before 2gen they lacked a member with charisma which adds a different flavor to the group. Nogi has tons of them so it's easier to pick a new centre. Even with current 2gen in Keya I feel nobody can touch Reina Moriya in charisma. She would definitely be a breath of fresh air in Keya. I even think Haruka Kuromi is a strong centre candidate. Mngt seems to look beyond dance performance. Keya needs change and it can't be helped to put 7 members from 1gen in under group who are strong performers. It's probably more about balance than make a senbatsu super strong. They are grateful for "all member senbatsu" with 8 singles so far which is uncommon in idol world but they are approaching the 5th year did Ozeki told on her blog so they had to do something to grow even larger.