-A new rumor has showed up that is quite interesting, involving the new team being a group of professional Monster-Taiji (Monster Hunters.) What's very interesting is that the rumor is fairly close to the ghost one, and it's possible that that rumored either spawned from, or evolved into this, as this one seems a little bit more plausible, as far as sentai is concerned.
-The rangers hunt down monsters who infest various places of the city. The monsters they fight can be captured, allowing the rangers to use the captured monster's powers.
-The team of 5 rangers will have already captured partner monsters before the series' beginning. These monsters are based on Legendary Beasts.
-By fighting with the other monsters, the rangers are able to seal them into medals, crystals and other such items. The monsters are then referred to as "Key Items", which activate different powers and weapons.
Take the above with a grain of salt, though it's really interesting, and it seems to be a natural progression from Shinkenger.