That whole “Ragnell is heavy” stuff was only brought in Brawl if memory serves to justify PoR Ike’s powerful attacks. You’re trying to stick way too much to that “source” when Sakurai himself has mentioned that he takes liberties with characters. If anything, Chrom would be a faster Ike to make himself stand out from Ike’s slowness. Chrom is known as a “rough” fighter and while Awakening mentions that Chrom was the one that taught Lucina how to fight, that was never truly shown in-game aside from a very short scene. Outside of that, she’s just female Marth which became Sakurai’s perfect excuse for making her a “Marth for novice players”.
Well someone on this board earlier mentioned that Ragnell was indeed meant to be a two handed sword in response to me saying something similar, and they seemed to know a whole lot more about the Tellius games then I do, so I thought that was the case. If Ragnell is apparently just as light as Falchion then fair enough, I haven't played Path of Radiance or Radiant Dawn to be able to tell. But I was just going off what I thought based off of Dark Pit and Lucina, and as far as I could tell, they have very minimal changes and are almost 1-to-1 with their original counterparts in terms of speed, weight, and attributes like that. I thought that Chrom being an Ike Echo would be the same situation.
I admit I was probably wrong about Ragnell being heavier than Falchion, I should have played the Tellius games or at least watched some gameplay footage before acting like I knew what I was talking about. But from my perspective, if Chrom had to be an Echo of Ike, then his properties and animations would also be mostly 1-to-1. So at that point, it didn't matter whether or not Ragnell was heavier than Falchion in canon, because in Smash, Ike's animations make his sword seem very heavy. So if Chrom were an Echo of Ike, he'd have to have the same animations and same speed that makes his sword seem heavy, at least, that was what I thought.
And my point about Lucina was mainly that since Chrom has a stronger build than her, I figured it would be weird if he was an Ike Echo because of the difference in speed. Lucina swings Falchion with little effort, so I imagined that Chrom being an Ike Echo would mean that he would have those same animations that make it look like he has a slightly harder time wielding the sword while Lucina is able to do so effortlessly. I wasn't thinking that Chrom trained Lucina so it would be weird that their fighting style is different, it was that Chrom has a stronger build than Lucina so it would be weird if his attacks were slower and made the sword seem heavy since she wields the same sword and has no problem swinging it quickly.
But admittedly, everything I said above was just what I was thinking when I wrote that earlier post. I was sort of adamant in thinking that Echoes would have no differences in terms of speed and so on, but upon thinking about it some more, I can't deny that they probably could make them either faster or slower (Though that might require a fair amount of tweaking to make them balanced). We don't know the criteria for Echo fighters yet so we can't say for sure really. I guess Chrom could be an Ike Echo if they altered the speed of his attacks and the animations that make the sword seem heavy. But I'll still contend that doing so is necessary to make him look right next to Lucina, because if he's a Dark Pit (and also Lucina) level of clone, then I still think it would be weird if Chrom swings Falchion slow, while Lucina swings Falchion fast.
Really, I think it would be easier to make him a Roy echo, since Roy's animations seem pretty "rough," but he still swings his sword relatively quickly. All they'd have to do is make his sword the same "Balanced across the whole blade" business as Lucina, slap his model on Roy's, probably change the fire effects, and call it a day. But that would technically be a
third derivation of Marth, a seventh Fire Emblem rep, and a third Awakening rep on top of that... so yeah (Also god
damn I write way too much at once, sorry for throwing this wall of text at the thread).