I'm hoping for something like the base in GoGoV/Lightspeed Rescue. I loved that Train Station they used for Grandliner.

I'm still mostly curious as to what kind of train they'll use.

Wasn't that the massive underwater base where you had about eight scenes where the railway assembled itself?

That'd be cool. I hope one finisher is the four rangers (Blue plus the other three non-red) drawing and quartering an enemy with the trains.

Also, this is real similar to a concept I came up with on my own; construction vehicles. Part of the plot for that would be that the Rangers can't have a secret identity because they have to help fix any damages they cause.

Hopefully, depending on Ranger count/color:
Red: Shinkansen (this is a given)
Blue/The Smart Guy: A big, bulky (and ugly) Freighter like a JNFR DD51 or an American EMD7
Yellow: a Eurostar
White: American 30s Streamliner
Green: The Obligatory steamer, but a Garratt that forms the entirety of the legs.
Pink: an older European locomotive emphasizing elegance and grace
Other locomotives I'd like to see:
A Fairlie as a pair of melee weapons
A Crocodile-type for the sixth ranger
A PRR GG1 to give to Green as an additional set of legs (or just use old rivets for him; that one's green)
A 1950s American A unit
A Union Pacific Big Boy, especially since when the one being restored is finished, it'll be the same year this airs stateside.

Here's my hopes
Red: LNER A4 Pacific
Blue: LMS Black 5
Green: A Beyer type Garratt
Black: A Ffestiniog Double Fairlie
Pink: The Ffestiniog Railway Small George Enland, Princess
6th Ranger: BR Class 28 Metrovick Co-Bo Diesel

Most of that's British. I'll admit they've got a lot of good stuff going on for their steam engines, but I'd prefer a global reach.

Still, it's amazing how much speculation got picked up for this. I'm used to Transformers, where we can guess all we want and outside of about six guys total we'll not know anything.

I'm genuinely shocked that this Sentai's theme hasn't made it to TVTropes' And The Fandom Rejoiced page.

'cuz we are.

Also, I think I know what the name got revealed: when the Kyoryuger/Go-Buster crossover occurs, the Tokkyuger team will show up. So this lets us know what it's called so that when they show up, we don't have to go digging that much.