Here's Jedi1357's list, though I removed some of the stuff that was in the OP list, some stuff that wasn't really subjective, and changed a few things around:
1boy (->male/male+child/shota + solo ?) 4 pages
1girl (->female/female+child/loli + solo ?) 10 pages
asking_for_it 1 page
big 4
bitch
boy(-> male/male+child. Danbooru aliased this to tagme, for some reason.)
bush(Images featuring the plant can stay. The tag needs to be cleaned out because someone decided at some point this tag meant "pubic_hair".)
classic (?) 1
commentary_request 9(For artist commentary from a pixiv description or something similar, not really subjective.)
crazy ? 13
creepy (?) 32
cry (alias to crying is necessary/danbooru aliased this to tears) 44
crying (?) (Danbooru aliased this to tears as well.)
dfo (->dungeon_fighter_online) 6
dicks_everywhere (not that subjective to me but...) 2
dirty (unless with actual dirt) 10
dog_blowjob
dying (should be used for characters on the verge of death, most likely isnt)
ecchi 24
erect (->erection, erect_nipples etc.) 2
erotic_pose 3
ecstasy 2
extra (sorry, what is this tag being used for?) 15
fun (?) 2
girl(female/female+child. Danbooru also aliased this one to tagme.)
gloryhole(seems to mostly be slang for 'mouth')
horny (I looked it up in a thesaurus – it is subjective) 7
huge_tits
Immoral 2
japanese (Do we really need this as a tag? For patriotic images, flags, maps, sports teams etc. use [[japan]]) 20
lol 12
loli + rating:safe (->child) 173
matching_hair/eyes
monster_penis (->monster_cock) 1
naughty_face (?) 154
needs_a_hug (?) 3
no_testicles (->futanari unless male) 12
novagina (->no_pussy) 10
os-tan (->os) 2
painful (->pain, when applicable) 1
pc (->computer) 2
penises (->penis) 2
penis_in_male_anus 4
phallic (?) 1
pixelated_penis
pleasure 2
pleasure_face (->ahegao, fucked_silly if applicable)4
poop (I don't quite agree with this, but if you take the Grotesque rule on feces literally, they're deletable.) 2
poorly_drawn (delete) 15
porn (?) 2
rape_face
scat 5 (delete per ToS)
shota + rating:safe (->child) 29
smothering (->smother) 1
so_moe_i'm_gonna_die!(here's danboorus wiki on it:
gelbooru.com/index.php?page=wiki&s=view&id=2578 , this one is debatable)
source (source_request ?) 4
sucking (->fellatio, mostly. Also breast_sucking, finger_sucking etc.) 12
suggestive (?) 3
tease (Should be aliased to 'teasing', teasing should be worked on to differentiate it from "presenting") 7
tentacle_rape (redundant?) 23
tmnt (->teenage_mutant_ninja_turtles or delete) 1
toned (?) 6
ugly 2
wanted_poster (alias to wanted?) 1
white (and other colors look like someone forgot an underscore – change to white_stockings, white_(pokemon) etc.) 12+
yotsuba (specify koiwai_yotsuba, yotsuba_(sister_princess), the yotsubato! copyright, etc.) 5
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I want to make a list for artists who have had their tag changed on Danbooru, but not here. All these need aliasing:
surume_(artist) -> surumeri_(baneiro)
minawa_(artist) -> minawa
omaemona_(pixiv) -> fuurin_(omaemona)
ham_(artist) -> ham_(points)
koomo_(pixiv148008) -> koumo
rindou_(pixiv19355) -> rindou_(awoshakushi)
son_(artist) -> sonson_(eleven)
null -> null_(nyanpyoun)
caraduki -> carazuki
saya_(pixiv) -> saya_(sayamendo)
shishigami_(pixiv) -> shishigami_(sunagimo)
2580rs -> tamutamu-t
kei_(pixiv14657) -> kei_(bekei)
shuz_(pixiv) -> shuz_(dodidu)
yukiame_kon -> yukiu_kon
diabolism -> toujou_sakana
show_(artist) -> show_(rinnetenshow)
gum_(artist) -> gum_(vivid_garden)
hara
and harayu -> hara_yui
seigo_tokiya -> tokiya_seigo
undercover_brothers -> black_olive
chihiro_2_(artist) -> meola
depth_bomb -> shimo_(depthbomb)
sakuraboshi_sora -> nagayama_yuunon
homare_(artist) -> homare_(fool's_art)
miyama_kannon -> miyama_amehiko
Feel free to PM me more if you find them, I could use the help.
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For yuks, KILL LIST:
Big_breasts(Assuming -> large_breasts)
Cute
Futa_is_always_bigger(Grouped into the 'futa is always bigger' pool)
Hairless_Pussy
Naked(Assuming -> Nude)
Needs_a_hug(Grouped into the 'Needs a Hug' pool)
round_ass
Sexy
Surprise_buttsex
Perfection
Vaginal_Penetration(-> vaginal)
Why