I think part of it is because Right and Kagura are similar in IMAGINATION power that it makes sense. I think you could also see it as a response to Kyoryuger and having Right be more willing to not be the main focus.
As for Saban, well he could always skip it!
But seriously, I think it’s going to be hard to avoid since the series seems very intent on keeping with the theme that a child can be anything they want so let’s switch colors. I think the company just has to suck it up and let male rangers wear pink. Especially since we’ve also seen green and pink switch.
Why do people assume saban/ PR DISLIKES the idea of girl reds and guy pinks? Hell, Disney PR beat sentai to the punch of having a girl red in SPD. Let’s also not forget saban turning most of the guy yellows into girls FOR girl viewers. I think they’ll be happy to adapt toqger and the color swapping. I’m actually surprised TOEI/sentai did it First.