I'm... not sure if these weapons will be all that great, though. Especially for the Ori cost.
Since at this point, DMM is moving pretty hard towards double-skill SSRs, or better such as double skill, level-cap 150 SSRs that go up to slvl 30. Like your good old Phoenix bow will be upgraded to that, assuming that you fork over the required 2x Ori, 10x Regalia, 10x Fang, 10x Rune plus a couple of basic Phoenix drops.
Fang requirements might be quite harsh, considering how they're released 1-3 level-breaks for weapons. Although spread across multiple elements, spending 10-30 Fangs in a month sounds painful. Although we'll have Ultimate difficulty daily quests by then, that will probably help.
Regalias you get from Ragnarok Disasters. Speaking of which, we might get Ragnarok Thunder Disaster in a day. You'll need 30 per Relic weapon, so 120 per LMB Relic weapon. Farming these will probably be a cunt as their droprate sucks ass as I understand it.
So, uh, getting back on track, it doesn't look like old Raid SSRs are getting the level 150 treatment. As such, sure, they're better than SRs, but you'll need four months to LMB one. Or at least three months of using valuable, limited Ori before you can even make use out of a weapon which has no long-term future, since double-skill and level 150+ double-skill weapons outvalue the everliving shit out of them. It's still good that this system exists, like, if Crom's Crotch Hammer's -10% Def will ever be absolutely required (ha ha?), we'll at least have some way of getting one. I guess.