Ngl, the personality modules barely changed much in AA2Unlimited (including most other modules from notable links) in an interesting way, or were just inconsistent/redundant; Example: the dude who's supposed to go on a killing rampage doesn't do anything for days or weeks, or really ever- and I've tried different combination of additional characters, modules and vanilla settings to no avail. Half of it is due to bugs from either AA2U or the base game itself. Let's not even forget the custom personalities with misleading/vague voicelines and subtitles (though tbf, it should be possible to improve or create more with AI- but personally I dislike AI, most of them lack emotion and that would only be worse with H-scenes).
The best thing about AA2U were the extra clothing and some handful of options for faces (they were extremely limited though).