At this point we don't know anything about it really. Hasbro has stated that Power Rangers has it's own dedicated design team, so that would imply they aren't going to crib from Transformers. Which is a good thing. Some people have stated that seeing Power Rangers inspired remolds of something like the Power of the Primes Dinobots would be a cool convention exclusive, and maybe that could happen, but unless they recreate the Transformers specific price points we won't be seeing that on store shelves.

We'll probably start finding stuff out during the fall conventions.

Why they want adapt Go-busters now ?

Well there's no official reason yet but here are a few reasons
1: The Zords are essentially Transformers, something Hasbro has experience with
2: Go Busters doesn't have a collectable toy gimmick so Hasbro could have wanted that because it's easier to get the hang of for them
3: Go Busters naturally appeals to American audiences with the spy theme
4: Hasbro wants more breathing room for future seasons so they're going back, by the time Beast Morphers starts airing, Lupin vs Patranger will be wrapping up, meaning they'll have 4 potential seasons left should they want to adapt ToQger later
5: Suit degradation is a thing, the longer they don't use the Go Busters suits, the likelier they'd need to be fixed up which is of course pretty expensive

But would Hasbro want adapt ToQger ?

Maybe, maybe not. We know they're willing to take more risks because of Go Busters but it's something we'll have to wait for

Probably not. Eurozoners alone can't sustain Train Questers Global.

Well the Bad Guys Trains become one robot by themselves.

Could the show have a high budget someday ?

Unclear. It used to be you weren't going to see any Train Transformers due to Hasbro feeling they wouldn't sell well enough in the States. ON the other hand this was back when the guys in charge of TF didn't want to do Combiners or Headmasters, and that has certainly changed.

Well, part of that changed was due to how they set up the lines, with an overabundance of repaints/retools as well as focusing the entire line around the combining/headmaster gimmick.