What you will see:
Non-consensual body modification
Dehumanization
Institutionalized lack of autonomy
Implications of grooming behaviors
The Banality of Evil
Probably more fucked up stuff, check the tags on the individual works as they get posted
What you won't see:
Underage sex - while XY omegas are generally raised with the understanding that they are essentially property and usually trained to be obedient, the way pheromones work means that adults are actively incapable of considering someone unpresented in a sexual manner and social taboos are incredibly strong about any kind of sexual activity involving unpresented people. While chromosomal puberty progresses as normal in this universe, unless suppressed, designational puberty does not begin until late teens, with the "final scent bloom" of presentation usually occurring somewhere between 19 and 24.
Forever mating bonds - forced monogamy is super not hot and I'm not writing it
Instincts overriding ability or intelligence (without artificial influences) - in a neutral society, alphas, betas, and omegas would more or less be on an even playing field, no alpha commands or uncontrollable heats/ruts
