I think it just hasn't caught on yet, honestly. I was just looking at it earlier and thinking that it would be a great way to update my Fury/Desperation Lucina into something more viable in the current meta. Chrom, on the other hand, probably wants the bond-type upgrade, unless he's running a brash assault build.
That's what I was thinking too, it universally isn't the best option, but shouldn't be sidelined due to it's potential, I mean it is a lot cheaper as I've said before and the threshold is easier to proc, in exchange for the renewal 3 effect, perfect for a fast frail attacker like Lucina, but not for Chrom, who's more of a sustain tank
It's honestly underrated, though I'd argue the only really good user of Sealed Falchion as a sidegrade is Lucina herself, due to being able to have a speed boon and having the offensive stats for it. With swift sparrow and sealed falchions effect, she can hit upwards of 59/48 offenses and all she needs to do to get here is take a hit, which is easy especially with how prevalent dragons are.
One reason it's underrated is because a lot of the users who upgraded their main Falchion user (from Awakening) don't want to use up even more Divine Dew to use ANOTHER upgrade for the exact same unit when they can use it on another unit that doesn't have their refinement yet and costs Dew.
That's actually what I thought too, good thing I waited before upgrading, and it paid off. Divine dew is very difficult to farm, so I have to agree that it's kind of a waste if you refined it before just to do it again. I just thought about this when I checked the recommended build here at gamepress, no mention of sealed Falchion at all.
But isn't the refined awakening falchion more of a self buff than anything, I mean a 20 hp heal every other turn + reciprocal aid is good, but if it ain't Marths refine, I wouldn't count on it alone. But I agree that the refined awakening falchion is more of an enemy phase buff as it's very difficult to line units up when attacking.
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