I feel like I easily could have written a better general idea on how this could have ended based on the shows history.
I really thought this was a foreshadow to how the ending was going to take place. Against Vecna the fight could have taken place in the mind. Have Eleven bring in the gang, who then get to be the very characters they got to play in Dungeons and Dragons. It would have brought the entire theme full circle.
Against
Oh yeah, the boss that is still alive and was never truly dealt with. This is where Eleven would have sacrificed herself. Using her "At this point" god like abilities, including flying, she would crush this being into a solid form that would both entrap it and her.
So what do the kids help with while Eleven is dealing with the ultimate bad guy? The Military of course with the help of
I mean, did he actually die in Season 4? What happened to Dr. Owens? They had an entire arc revolving around an inner conflict within the military that just vanished. This is who the kids/adults could have worked with to prevent interference as Eleven did final battle.
TA DA.
Seriously what the fuck was season 5? I feel like the brothers were forced into writing something they did not actually want to write.
This review sums up some of the issues pretty well.