Did they get better at hiding it/reshooting Yellow Ranger scenes?
I don't think so, it's as ovvious in the sentai footage as in MMPR.
Still, why would Disney have been so opposed to adding more female Rangers? No, wait, rhetorical question... I know the likely answer and I'm not happy about it.
There's a difference between not wanting to add a female ranger and not wanting to change an existing male one, I think the likeliest reason was that someone at Disney looked at the navy ranger and said "But that's a man". I actually agreed with Disney and was glad they stopped the gender switching, it always bothered me because it was so obvious.
The Disney seasons had a bunch of female supporting characters as friends/mentors/villains, so it's not like they had a problem with females generally, they have a much better track record with that than Saban since he got the franchise back.
Ninja Storm: Marah, Kapri, Kelly
Dino Thunder: Cassie, Elsa, Hayley
SPD: Kat, Mora, Morgana
Mystic Force: Udonna, Clare, Leelee
Operation Overdrive: Miratrix
Jungle Fury: Camille, Fran
RPM: Dr. K, Tenaya 7
Samurai/Super Samurai: none
Megaforce/Super Megaforce: nada
Dino Charge: Kendall
For Saban that's one female character (I'm only counting face actors, not rubber suits) in five years and they have abandoned gender switching as well.
Probably, but there's no harm in expressing the desire for it to happen. Change isn't brought about by the people who make excuses for the status quo, but by the people who question it. I'm happier being in the latter group.
But we should also be realistic about that, MMPR already has two female rangers on a team of five and a female main villain, that beats Transformers and TMNT right from the start, for female representation MMPR looks already very good without making any changes to the tv show's gender ratio.
BSG didn't make Starbuck and Boomer female for shits and giggles, they did that because the original series was severely lacking in female characters, that's not the case for MMPR.
And don't get me wrong, I'd like a female sixth or red, I'd also like a male pink, I just don't think it's going to happen for this movie, no chance.
If I'm proven wrong, great! I'll do a happy dance and eat crow for three days straight.
It was just two years ago that the producer of Kyoryuger upset some fans with his comment about no yellow ranger in the series.
But he doesn't speak for all of Japan, he doesn't even speak for everyone at Toei. He uses "we" a lot in his comments but I think it was just him, Kyoryu Violet was supposed to be male for the entire series for example, Koichi Sakamoto fought for a change to female and Toei did it, so it wasn't everyone involved with Kyoryuger and it seems like Toei went out of their way to prove him wrong as soon as he was gone, ToQger had male characters change into yellow and pink all the time and with Ninninger we have a full time male yellow.
It's also worth noting that the japanese fans were as upset about his comments as the western fans.