We all know that this show is renewed for both Seasons 5 and 6. But this is what I suggest:
1) Early in Season 5, I hope there will be Nationals.
2) I also hope in Season 5 that there will be a 12th episode to make this show celebrate its 100th episode.
3) On Season 4 finale of this show, Sugar and Joe should be appearing in that episode, but Sugar is the only member not singing, but Joe is about to join in the singing performance.
4) Somewhere in the middle of Season 5, it looks like Tina, Brittany, Artie, Blaine, Sam and Sugar are leaving McKinley High School.
5) It looks like Sugar is transferring and Tina, Brittany, Artie, Blaine and Sam are graduating.
6) The only remaining high school students are Marley, Kitty, Jake, Ryder, Joe and Unique.
7) The only remaining high school faculty are Will, Emma, Sue and Principal Figgins.
There will be additional even-numbered members in McKinley High by then.
9) If there is a New York subplot resuming, then the only people that will be kept is Rachel, Finn, Kurt, Santana, Blaine, and let's include Tina, who is catching up right now.
10) I know the ones who are not going to appear too often are Quinn, Mercedes, Puck, Artie, Sam, Mike, Brittany and Sugar.
That's all, in my own opinion!