I actually figured I might finally start investing in making the Askran trio a little less mediocre. Starting with Alfonse ... my only regret is that Earthsweep isn't something I can stick in his B slot.
More generally, I mainly started working on them due to the character specific quests they get every now and then. If I can use them in Arena without them being dead weight that'd be a bonus as well.
I’m well aware he’s a terrible windsweep user which is why I said “earthsweep” in the first place. I was merely lamenting the lack of its existence outside of Myrrh and Leo’s weapon effects (ie unable to double unless you have equal or higher defence).