Certain music fan vids have shipped the Dana Mitchell and Carter Grayson together, possibly from outpours of psychological color associations (in this case Red and Pink) fans had with love in Power Rangers starting from Kimberly and a later Red Ranger Tommy in Mighty Morphin, Kat-Tommy from Zeo and Kendrix-Leo from Lost Galaxy.
In fact, Power Rangers Lightspeed Rescue has exactly what Alfred Hitchcock (and in turn inspired David Lynch) had in many of their films, not to mention Walter Hill in the Warriors, Paul Thomas Anderson in the Master.
The use of this literary device, is called the double, a character who physically look similar in similar situations within a film in the previous cases, and in this case, a franchise. I have speculated this ever since I watched Lightspeed Rescue when I was 14, and finally have more evidence of it now rewatching episodes. Saban did this possibly afraid from alienating fans from watching a Power Rangers series that is too different, even though it did not primarily take place in Space and had nothing to do with Angel Grove. I am 99% sure Saban and his lieutenants were aware of this when they were casting, unlike when they cast Thuy as Trini and Walter as Zack.
Look at the resemblances here.
Carter is Leo (the leader)
Dana is Kendrix. (Both blonde, like romances in a Hitchcock film or Kat from Zeo)
Chad is Kai. (Asian American)
Kelsey is Maya (Brunette)
Joel is Damon (African American)
And to be honest, are they really lying about having the same crew for a different series post-Lost Galaxy? Although characters on screen change, Most of the backstage crew is still the same, (sold from or to Disney or not.)
Furthermore, it is sort of possibly inadvertently hinted in the story.
Remember that story about Carter wishing he could be as good of a superhero as Captain Mitchell? Well, in fact, what he may have inferred by that was he wanted to become Captain Mitchell's son, or Dana's husband, because of how much of a father figure and role model Captain Mitchell was to him growing up.
We do not see what of Carter Grayson's family. He's an adult. They could live far away. They could have been old or died. (Maybe they died in that fire that traumatized him when he was younger.)
The point is in the show, he is lacking a family. In fact, most Power Rangers series lack families and ever since Turbo, they have made that less of an issue. With Captain Mitchell and possibly Dana, he can have a family in the show, a theme shared in Power Rangers Lost Galaxy with Lost Galaxy's and its source footage, Gingaman's Red Ranger brothers.
Another Lost Galaxy-Lightspeed Rescue connection
Leo has a brother. Dana has a brother. Leo and Kendrix want a relationship between each other. Carter and Dana want a relationship between each other.They're both coupled with each others associated self in a different Power Rangers generation.
Furthermore, Leo and Kendrix never get to tell each other how they feel, even if they do flirt with each other, because Kendrix dies in Lost Galaxy. Is this the reason why Carter and Dana never start a relationship either? It's a theory...
Recently, there has been a picture circulating of Alison MacGinnis backstage. And get this: rumor is she's naturally red-head and wears a blonde wig when portraying Dana Mitchell!
This gets more interesting in the Junior Ranger Trakeena's Revenge episode. The mother is a redhead, like Alison MacGinnis. You could debate if this red head is Carter Grayson's wife, but the Junior Ranger could definitely be an offspring-like figure, just like Captain Mitchell and Dana Mitchell.
Furthermore, during several parts of the episode, Leo Corbett, Carter Grayson's predecessor is losing his powers and voice, just like the the redhead mother. In fact, we do not get to see much of Kendrix or her antecessor Karone in the episode. They've become powerless. Heck, we do not get to see much of Dana and Carter in the same episode despite the fact that they are physically perfectly fine in the episode.
A lot of what could have happened for Lightspeed Rescue.
I am not suggesting that this is canon or was the original intent of the writers, unlike what Rob Ager and Darren Foley suggested for their respected films by their favorite auteurs. However, would not everybody like the be Stalinist for once and rewrite history so that something better comes from Power Rangers canon for once?
This must be done at the teamup, as it may be another 5-10 years before something monumental as this happens. Sure, they screwed up the monumental passing of the torch from Bulk to Spike and the Samurai Rangers. They just have to keep the two in character and nothing else can be screwed up from that.
Writers do not, I repeat, do not have Dana take Carter's last name, it has to be Carter who takes Dana's.