the main question you gotta ask for when you come up with a Sentai motiff nowadays:

can you make a toy out of it?

Truth.

Of course there can be a female red - and there should be. Currently Super Sentai seems to run on the same tropes series after series - over-enthusiastic male Red character that ends up being the strongest and most powerful of the entire team with a story line that somehow ends up revolving around him.

Even if they kept the same trope but had a female Red instead it would be a breath of fresh air.

Just for once I wish they would have other characters that become stronger. Maybe blue or black/green. Or even one of the females. And no I'm not forgetting at MegaRanger let the others use the "Battlizer" bracelet.

^All of this, pretty much.

We don't have to put her in a Gaim setting, you know? And females aren't that unstable anyway. Actually, in very tough situations, women usually tend to be more calm and efficient. It's a typical motherly quality most women posess. They are also good leaders because they tend to be more emotionally sensitive and notice what people around them feel- so actually, they might even prevent drama.

Well, red usually is the main character, after all. As much as Sentai relies on teamwork, it's usually red's story that is told. And it has been like that for far longer than the last 3 enthusiastic reds. Even Shinkenger, Gokaiger and Goseiger, for example, had a strong focus on red's story. Gekiranger too. Megaranger as well. Or Jetman...

I think this is also why the red rangers represent their show, even if they're not the leader (in Gekiranger, Ran was the leader and in Kakuranger Tsuruhime, but Jan and Sasuke represent the team)- they're the main characters.

I'm not sure why, he's just a continuation of the same traits we've had the past few seasons.

1. Incredibly strong. He puts everyone else on the team to shame, even the ones who've had more training and experience.
2. Really brave, he'll keep fighting no matter what!
3. Energetic. He just can't stop getting fired up about things.
3. Stupid. More so than even Right. His main characteristic is literally that he possesses zero common sense or intelligence.

Bonus: Terrible acting. This one's actually unique to him and not so much a character trait, but his actor is distractingly bad in almost every scene he appears (which of course is most of them). The Fourze style "I'm getting fiiiired up!" thing is especially cringe inducing.

This is why there will never be a female red. Red rangers sell the most toys and the boys that the toys are marketed towards want to emulate what they see on tv. I wish the super hero genre would better embrace their female fans.

And thinking a woman would break down when things got tough is extremely sexist; its your opinion, but it is a sexist opinion. My wife is a soldier and has been in a ton of really tough and stressful situations and she hasn't broken down once and I know a ton of other women that are exactly the same way (even Japanese women), so that idea is sexist and stupid.

yeah, but these are the reasons kids can relate to characters like this.

1. kids want to believe they actually are strong, so they like to put themselves in the shoes of strong heroes.
2. kids want to be brave. so, a brave hero for them too look up to can allow them to gain that same courage.
3. kids are full of energy, so having an energetic character is a major factor for them to relate to the hero.
4. kids aren't the brightest, and they're bound to make some mistakes in life, so again, makes them more relatable.

even if Red isn't essentially the leader, more often than not, they're the one who wants to keep the team together. they're also the title character. I mean, red is the center of their flag.

A female red would be cool. It would just be nice to shake things up a bit, especially when the leader personalities are getting so formulaic recently. Maybe have her be a more serious type with an arc based on lightening up or a "team mum" type with heavy emphasis on the "holds the team together" thing. It would also probably be a cool move for the girls who watch the show.

If we have another ninja sentai the enemies will be youkais again ?