See here's the thing, that stuff in Senran Kagura isn't good. It's standard faire for a 2am ecchi anime that ultimately no one cares about. Qwaser's plot and characters went crazy, demons trying to over throw government in order to drown society in sin and lust, children who could stop it being murdered in the street and people needed to fight against it...but at the end of the day, it was still just about watching guys sucking women's breasts to power up. I've played thorugh all of Estival, there is nothing plotwise, character wise, that is even close to decent. It's all about the characters, how they're designed and what you can do to them. The game play doesn't follow any of the norms of other games in it's ilk, it's serviceable at best across the board.
That being said, I LOVE skullgirls. I think it's great. I think it's an excellent game to learn how to play fighting games, I think it breaks things down really simple, I love the fact that it allows you to be creative in how you build combos, I love the freedom making custom assists gives you...Skullgirls is trying to be the best game it can possibly be. Whether or not you like the artstyle is up to you, some people think it's too risque, that's fine, they're entitled to their opinion. Skullgirls uses fanservice as a seasoning in the meal of video games, it sprinkles it around, it doesn't bury it and it's a better game for it. Bayonetta is the same. The upcoming Bloodstained looks like it's going to be the same. Hell, I'm willing to give props to stuff like Lollipop Chainsaw that uses the sexualized nature of it's protagonists as a commentary on the world.
Senran Kagura doesn't do any of that. It's not trying to be anything but smut. Someone arguing against me in a different through said it pretty well when I chastised the games actually getting worse over time, "Naw man, you're wrong, the TnA of these games is getting better with every game. That cooking game was pretty bad, but the fanservice was top shelf." These games have one purpose and one purpose only, titillation. And when you take that at face value, and then look at how and with what it uses to titillate, you see a far larger problem that runs a streak through pretty much all fanservice games, "yo, these girls are WAY underage"'.
And I really wish the argument that people ultimately come at me with at the end of everything would be something more than, "naw, shut up though."