killer bee = presumed dead from having 8 tails extracted.
Killer bee= maybe not dead. Due to not all the 8 tails being extracted.
So far 100% of jin deaths from bijuu extraction, ONLY happen once a bijuu is fully pulled out. If a tentacle was really cut off BEFORE all of gyuuki was extracted then killer bee is alive. Not in good shape, but not on his deathbed.
As for the others....
Its a waste of panel space, to go to show tobirama and hashirama just sitting in the same place pinned down with chakra rods.
Yamato will probably be viewed later as being in spiral zetsu. Even still, its not like he has been conscious the entire war.(oh wait he has). If he doesnt return after the war, then we should wonder what happened to him.
Ten ten, is takeing her time lugging around giant sage tools. Plus she isnt that relevant right now.
Hinata, is not needed for defeating madara. Also not a really relevant character.
As for what will happen to them BEFORE the final fight? Well probably nothing. So wasted panel space. What happens AFTER the final fight, and perhaps DURING the final fight though, is more important.