I find the vanilla attraction pretty lackluster and unimmersive, because for some reason half the town has to consider my Sims attractive, no matter how much their personality says otherwise.

My spy witch has nothing attractive about her other than she is a skill buff. She is very skinny( works out a lot and doesn't eat much), her face has some weird features( mainly her insane gaze), her red hair is very messy, her personality makes her look anything but hot, unless you count people who are attracted to others solely because of their intellect( she is Genius, Brave, Disciplined, Handy, Loner and Brooding). She is married to her job and reports everyone, she climbs into friggin trashcans to get info. She used to be a nerd in the college and studied skills instead of going out. She publically killed several vampires by casting the Thirst curse on them repeatedly. Yet her smarts seem to be enough for all the men( and some women) in Bridgeport to find her irresistable, with her mailbox constantly filled with love letters from various sims( including thr married ones).

It isn't limited to just one neighborhood or one sim: she went to Moonlight Falls( I have the NRaas Traveler mod) to kill the Edward Cullen expy, and when she actually met him and was as rude as possible to him, he still thought she was attractive, despite him being a Teen( I had no teen romance mods installed, unless WooHooer has such features. I never tweaked with WooHooer settings though). Also, she went to question the Supernatural Roomates household, and for whatever reason the vamp in it got so attracted to her they became best friends in, like, 2 interactions? And when I switched to another household to explore a tomb, when the sim( who also had lots of skills maxed out) encountered a mummy, a message popped up of the mummy being attracted to the sim.

Any mods that allow to fix the stupid attraction thing that makes my sims look like sexiest people alive when they're actually ordinary people? Preferably if they're compatible with NRaas mods( except for Story Progression, I don't like my sims having that much autonomy, so I play without NRaas SP and with EA SP turned off).

Half the town? Get on my level, noob.

But seriously, yes, I'd very much like to see a fix for that and especially if it doesn't involve SP of any sort (though I have nothing against the Socialist Party). Shit's ridiculous and I'd rather have everyone think my Sim's a total bitch.

Instantly becoming friends or best friends with everyone is usually a matter of charisma, traits, and certain LTRs, not as much attraction scores.

But I believe the mod you want is NRaas Chemistry. Unfortunately it doesn't exist yet beyond a very early pre-alpha testing phase. We've seen a couple of its functions in action during early testing as of a month or so ago, but it's nowhere near ready for actual use. I'm afraid this is going to take a while.

In the meantime, for those so inclined, there is this: http://www.modthesims.info/download.php?t=492102

Just checked, she studied Charisma. She also has Magic Hands, Never Dull, Fast Learner, Attractive, Observant, Fast Metabolism, Multi-Tasker, Portal Immunity, No Bills Ever, Long Distance Friend and Observant. Charisma and the Attractive LTR must have been the culprits. I don't even remember why the hell I purchased Attractive, or at which point.
Also, thanks for the heads up!

I think I like the idea of the No Bills Ever LTR making sims become more attractive to others. But I don't know of anyone who has worked that bit into the formula yet.