Let's see......
Not garbage mythics for melee jobs(RDM COR included, pet/mage/ranged job doesn't count):
Murgleis: Best enfeebling weapon
Vajra: For SA/TA only fight like Ernys
Liberator: Best macc weapon and prebuff with absorb.
Tizona: For situations that needs MP.
Death Penalty: Best leaden salute gun
Epeolatry: Best tanking/hybrid tanking weapon.
Terpsichore: To my knowledge, Best TP spam weapon.
Not so useful melee mythics:
Conqueror, Glanzfaust, Koga, Nagi, Ryuno
7 melee mythics are useful, 5 melee mythics aren't so useful.
Relic: Let's see again, besides mage/ranged/Kikoku/gungnir
Not so garbage:
Spharai: I believe this is still the best weapon for counter tanking, correct me if I'm wrong.
Excalibur: Fusion WS for RDM, or nice aftermath.
Ragnarok: Max melee acc build for GS
Apocalypse: Best choice for tanking and "oh my WHM just d/c" kind of oh shit moments. Honestly out of all REMA I think this weapon is the most job changing one for DRK.
Amano: Max acc build
so again, 7 melee relic aren't garbage. The only not so useful relic in the list would be Mandau and (I'm not a fan of) Bravura.
Compare with aeonic, aeonic really doesn't get devastating advantage. It's like mythic or relic, you use it when situations needs it, but it's not meant to be used full time for every situations.
I brought up GS because the ideal choice for DRK DPS vomit is still Calad, which is empyrean not aeonic. The "3m" item isn't viable for DRK because of MP drain, once MP is all gone Calad would pull far ahead. Calad is just that, one beast of GS. So "aeonic is best" doesn't apply here.
Also wtf with Aettir is better than epeo? Epeo is one of the most job changing weapon on RUN or even entire game. It's THE best weapon for hybrid tanking, and it creates much more room for error for tanks. There are always time that WHM d/c, R0, reacts slow, or leader just use pt setup without WHM. The flexibility of epeo that allows RUN to stay alive in all of above situations is irreplaceable. Nevermind the fact that epeo maintains high level of output in 40%+ DT hybrid tanking set, which can be pushed to 75% PDT- in a sec without suffering from TP lose, while lionheart can't do it as smoothly, not even close.
Having the ability to aoe liement saves lives sometimes, and highest enmity in weapon slot is icing on the cake.
Aettir has like what?....meva and more meva. Nobody cares about meva on RUN. We already resist everything without aettir. It can't DD as well as epeo, it can't survive as well as epeo. It's just a functional weapon that get things done, that's it.
It makes absolutely zero sense that the usefulness of REM weapons are downplayed to this level.....aeonics are good. But they are not by all end all best of the very best weapon.