I think my problem with the recent sexualization issue is that it seems to have grown. DOA1 started with the bouncing breasts and the nude Kasumi in the intro, but that was about it. DOA2 and 3 were limited to promotional materials. However, the ads for DOA3, the "She kicks high" campaign saw a shift in the marketing, made even more explicit by DOAXBV's "tissues sold separately" ad and the many skimpy bikinis in the game.
DOA2U had its share of sexiness, but the only nude scenes weren't intended to be sexy (one was a rape scene, the other closer to a birth metaphor), and while it had swimsuits and a beach level, there were only a few swimsuits. DOA4 started to shift towards sexiness, though, with every girl except for Ayane and Helena having a sexy ending (yes, even La Mariposa's had some sex in it). DOAX2 was even worse, independently jiggling breasts, softcore porn minigames, a flippin' poledance... However, DOAD definitely turned it down, having little to no sexual content.
In comes DOA5, which starts off by saying it's gonna be a more serious game. Instead, because a bunch of people ruined it for everyone else, we get five costume packs solely consisting of swimsuits for the girls, several packs where girls are the only ones to receive costumes, said costumes being catered to fetishes like schoolgirls, nurses and maids, DLC characters who are only female, including a blatant attempt to appeal to the Lolicon crowd, a breast bouncing option that makes DOAX2's look tame, and possibly the worst costumes in the game, Momiji's mummy dental floss, and friggin TOWELS for the cast. You can't call yourself "a fighter" and only act like a model, hence my avatar.
I never played DOA for the sex. I skipped the volleyball games altogether. I got started on DOA3 because I was recommended it by someone who worked at Microsoft, and I enjoyed it a lot. It became my go-to fighter, if not my introduction to fighters altogether. I enjoyed the stages, the characters, the fighting system. Not the sex. I don't play the game to watch Leifang get groped on the bus, I play to break necks as Bayman and Leon. I don't play because of some model-rockstar-movie star-governer-whore girl, I play for Ryu FRIGGIN Hayabusa. I feel like DOA has lost sight over providing actual content other than just fanservice.