Sagittarius Aiolos is one of the oldest DPS in the game and always had the same identity: a pure single-target one-shotter. His plan is Golden Arrows, an expensive arrow that steals attack from his own teammates to delete a priority target, plus two snowball tools: an extra move after every kill and a final arrow when he dies. On paper that sounds great, but for years he was too slow and too expensive, so he ended up as a collection character.
Destiny Reshaping finally makes him playable. The mode does not change his role, it fixes his tempo: his arrows hit harder, they pierce part of the enemy’s defense and they cost less energy, which was always his main problem. The key change is the snowball, because the extra turn after a kill is now guaranteed instead of a gamble. He also keeps stealing physical attack from your lineup while he attacks, so his damage grows with every shot.
Does that make him meta? No. Sleep Angel Toma, who also gets a cheaper skill, is still the best one-shotter in the game: he is more likely to kill and, when he fails, he can still keep his turn, while a failed arrow from Aiolos means waiting a whole round. Among the Reshaped characters, though, he is almost as good as Gemini Saga: both need support to chain kills, but Aiolos generates his own extra turns.
His best partners are the ones who accelerate him or pay for his arrows: Gemini Defteros for assists and extra turns, plus energy supports like Divine Dohko. One warning with Aquarius Mystoria: his protective mark can save Aiolos, but it also prevents him from dying, and a saved Aiolos never fires his last arrow. Everything anti-one-shot counters him too: Camus Surplice’s ice shield, Dragon Teeth, Oneiros and the resurrection mechanics.
Is he worth investing in? Only if you actually want to play him. The mode is free-to-play, it needs farming and no real money, and the last level only adds stats, so you can already enjoy him half-reshaped. Just do not expect him to break the meta.