The fillers now are related. They re interesting because they are stories in the war.
In a few weeks if fillers were to appear it would be about stuff we have seen hundreds of times.
You can't have a filler half way through madaras fight so I personally think they are gonna make a ton of fillers so we the fans can have a ton of episodes without fillers.
B/C so like they can not go to far too close to the manga you know like Bleach and Fairy Tail. So their trying to fall back some more until they think its the right time to do what's in the manga