Not sure if it helps you guys with the look of the black and pink rangers, but we know they will continue using the Sentai Gears gimmick, just with different color Gears. The latest rumor suggests that when the DonBrothers use them, they will not be granted a related power as happens to the Zenkaigers, but instead will essentially be Gokai Changing (albeit with a new name) into those past rangers. If that's the case, I imagine that pink and black will be spamming past ranger forms all the time so that they can just put someone in a suit instead.
Supposedly the second quarter toys have leaked, and if they turn out to be accurate then the first robot - called 'Don Onitaijin' - doesn't go on sale until then, so there's a distinct possibility that the first quarter won't have giant fights (unless Zyuran sticks around, but we've only seen Kaito in the trailers so far).
The leak also claims that we will get both a gold and a silver ranger arriving in the second quarter. It also lists a "rival hero robot" which I'd presume was for them but might also be for the villainous trio seeing as they seem to do a roll call in that trailer above?