You can rework one killer. Who would it be?

I would rework Myers, played him a lot, thought about what I would alter or change about him a lot and I think I've made a fairly solid list of changes that will just address the issues I have with Myers:

Perks:

1. Dying Light no longer disappears when the obsession dies, instead, you keep the stacks(like STBFL). If a new obsession rises, you can add more stacks.
2. STBFL, maybe cap it at 10 stacks instead of 8. Doesnt buff it too much(a killer with 8 stacks will just be as dangerous as a killer with 10 stacks), but it gives it more variety outside Pig and Demogorgon.
3. PWYF, no longer lose stacks if you do not deal damage, however, lose 2 stacks if you DO deal damage, lose 3 stacks if you deal damage to the obsession. Again, giving it more variety among other killers but also giving it a significant downside to compensate.

Power:

1. Being able to stalk everyone within your vision, instead of only the nearest person.
2. No range cap on his stalking
3. no longer become collisionless while stalking(he is the only killer to be collisionless without having dealt damage)
4. make Jewellery(yellow) basekit(no altering the existing addons like Windstorm, they are already mediocre and for them to have any significant use, you need to use all 3 addons at the same time, adding Jewellery as basekit makes Tacky Earring at least worth using) and Glass Fragment basekit(I dont see a reason why not, you're already slow and you lose the aura reading when you reach T2).
5. If a survivor dies, their remaining Evil is spread equally to remaining survivors instead of being gone forever(Other than collision, Myers is also the only killer that has a hard capped power, making him a regular M1 killer, spreading it out would only be fair and doesnt need alteration of most of his addons).
6. Once all evil is drained, increase his vaulting speed in T2(also, add a bar that shows the remaining Evil in the match/per survivor just for QoL sake)

Addons:(assuming 4 grey, 5 yellow, 5 green, 4 purple and 2 pink, as Myers is the only killer not adhering to this structure yet)

Grey

1. Tacky Earrings, currently terrible, but assuming Jewellery becomes basekit, actually decent, no need for a change.
2. Boyfriends Memo (BUFF), currently, this changes the 0.2 second lunge to 0.22 seconds(10%). A normal lunge is 0.5 seconds. I think this addon is easily worth adding 100% instead of 10%. Also a thing to note: Killers do not get their lunge speed untill after the first 0.2 seconds. Its 0.2 seconds charge before 0.3 seconds of moving 172,5%. Meaning Myer's T1 lunge is already at only 105% speed, and with Memo, he goes from 105% to 172.5% for 0.02 seconds(aka, practically non-existent). Using an entire addon slot to double it, gives him some more room, especially as T1 Myers, which this addon is meant to support.
3. Blond Hair (BUFF) remove the increased amount of Evil needed for the first time. It's not that significant and it would be unique as the only extending addon without a downside.
4. Memorial Flower, stays the same, just goes from yellow to grey.

Yellow

1. Reflective Fragment (BUFF) now stacks with Mirror Shard.
2. Jewellery, same as Tacky, assuming this becomes basekit, this addon is actually quite nice, no need for a change.
3. Hair Brush, fine as it is, being weaker to Blond Hair early on, but stronger over time.
4. Dead Rabbit (BUFF), from 25% in each catagory to 50%. Having a bigger terror radius in t3 beyond 25% isnt actually that significant, but it is really significant while being in T2(especially perma-T2) as it reduces the effects of Monitor and Abuse.
5. Memorial Picture (NEW), moderately increasing Evil Gain when stalking a survivor(18%). Sounds insane, but only if you use both J. Myers and this one, meaning you have a 43% on all targets at the cost of 2 addons. Which isnt that significant, both current addons already reach 36% together, being 7% faster isnt that big of a deal, especially considering there already exists a quicker version(Journal+J.Myers, for a whopping 65% stalk speed increase).

Green

1. Mirror Shard (BUFF) now stacks with Reflective Fragment.
2. Judiths Journal, remains the same
3. Jewelelry Box, remains the same, same reason as Tacky.
4. J.Myers, remains the same.
5. Hair Bow, remains the same, essentially being a better Hair Brush.

Purple

1. Vanity Mirror (BUFF), now no longer reduces movement speed. The Red Light and not being Undetectable are already a big enough of a downside for T2 Myers. It's literally a worse T1 Myers in every way possible.
2. Scratched Mirror, assuming all previous changes, is fine as is, as a QoL might add the current Boyfriend's Memo(10%).
3. Lock of Hair (BUFF), now requires 4 stalk points instead of 5 the first time it gets activated.
4. Tombstone Piece (FULL REWORK), Vault 15% faster(for a total of 50% if using Bamboozle and Fire Up) and be able to stalk in T3(meaning you can prolong T3). While these 2 dont seem to be linked directly, it means you can stalk someone before vaulting a window to have a longer T3 duration while also reducing the distance. Let alone that in the case that all your Stalk is gone, you still have the 15% bonus.

Pink

1. Tombstone, slight nerf: reduce movementspeed to 10% instead of 9. I always thought it was weird an instakilling myers was able to move faster than a t1 myers while also being able to Lunge normally with an instadown, even if it takes longer to stalk.
2. Fragrant Tuft, slight change: Show Myer's Aura for 2 seconds the moment he reaches T3(giving infinite T3 a slight downside and survivors a head's up that it's not Lock of Hair or Hair Bow, which I think is fair), increase the Terror Radius by 15%.

I think this is relatively fair and would make Myers an extremely variable killer to use, while also making him a lot less reliant on map offerings with his niche builds.

Deathslinger or Spirit. I don't find their powers particularly fun to use and playing against them just makes me want to play a different game.

So many other Killers in this game, and you pick the one that doesn't need to be changed.

Twins.

I would rework Nurse to have any power other than blinks, probably keeping a teleportation aspect. Freddy, Demogorgon, and Twins emulate the teleport effect pretty good.