The difference between the new and the old is too severe for it to simply be degradation of style. This is a conscious shift in artistic style to facilitate faster creation of content and to pander to the support base he and his partner have cultivated. What we're seeing is a decision to cut away as much variety as possible, where the only body types are busty, bustier, and even bustier with muscles. Even if we ignore the fact that he's copy-pasting characters together resulting in deformed monstrosities, or that Lex has a telescopic dick that in some scenes looks only slightly larger than average and in others is like a foot and a half long and thicker than a can of coke, or that he's stopped maintaining a consistent design across content, the fact of the matter is that he's reduced his art style of a "one size fits all" take on the characters where the resemblance to the DCAU originals ceases outside of their faces. This is too specific and targeted of a shift for it to actually be degradation.
I'm no artist, but what you're saying feels right to me. The art shift feels like a conscious choice rather than a degradation.
If the game started with this art, I think I would enjoy it just as much. It's not like his current art is bad, some blatant copy-pastes aside. It's just that it feels a little generic when almost all of the women are busty or too muscly. The art is still perfectly serviceable, but compared to older stuff it has certainly lost some of its charm and individuality... For example, I miss some of the more petite heroes like Batgirl and Supergirl. Those were my favorites.
And if only that was the biggest problem. For me the greatest problem of this game is the almost complete lack of plot advancement. I'd love for the devs to interconnect some of the standalone events and storylines or just show some impact for Lex's actions. We just grab new girls, blowjob, sex, anal and done, the girls love Lex. There's barely even any dialogue anymore to sell the concept of corruption. I get it we're here for the porn, but again compare the old Batgirl, Supergirl, Canary, Lois, etc, content with the recent girls. It's night and day. Oh well...