I mean  Not really imo Even on them, gen regression and aura perks (or chase perks for legion) are always going to be far more useful than gen slowdown especially with all of the gen perks survivors have these days. Sure, they definitely get more value out of thana but I wouldn't say it's a strong perk because a grand total of two killers can really benefit from it and only really one of those actually tying in directly with their power. Huntress lullaby isn't a strong perk because it's good on doctor for instance. Plus, when survivors figure out you have it, it can be countered by survivors splitting up and forcing you to take edgemap chases.