Sorry to be negative, but I think this is a sign that the game is going downhill still further. :-(
On the bright side, Aldo can be made quite powerful with his upgrade from the end of the Goddess of Time storyline, and this further helps him keep pace with the ga(t)cha characters - this is very, very good. Also, the Stellar Awakenings (SAs) are optional atm, and not "needed" for any content in particular... yet. And, technically at least, we can earn some of these materials for "free"... so that's good...
On the other hand, WFS has already started releasing gacha characters - Suzette and Tsukiha - that can be Stellar Awakened, and soon Alma will gain an Another Style that already will come with this feature. This is good for their profits, as people will pull for characters that they already have, chasing these new SAs, but it will also generate hurt feelings and FOMO in both the short and long runs, plus also more confusion. Also the text for these new skills is VERY LONG, and adds still further to the complexity present in this game. Finally, I just saw today that there is a kind of sparkly effect that a character gains in the party screen when their SA is unlocked. That is precisely what happened in my former game (Realm Defense), just before I left it for good, as I realized that they were steadily changing it away from a "tournament-based/multiplayer tower defense/strategy" game into one based on gambling and more of a "pay irl money = win" model. So when I saw that shimmering effect, I hope you will forgive me for saying so but a little bit of me just died inside, seeing it here too in this beloved fantasy jRPG nostalgia game! (though... it is quite pretty, especially when animated I am sure, though have not seen that aspect of it yet)
I am of the mindset that anything that widens the gap b/t P2W Whales and F2P or Minnows/Dolphins is a bad thing in a game. Cosmetic stuff like cat gear would be entirely different - that's a great way to show off, Whales can whale to their hearts content and practically nobody minds (or would not if they think about it for a moment), everyone benefits (keeping the game alive), it's all good there imho - but when content becomes gated by cost then the game starts to die off, e.g. if you spend $100 to clear one thing, then will you next spend $200 to clear the subsequent thing, and what if you do both, you HAVE to know that there will be a cost behind that... and another one behind that too? Except the costs are rarely if ever transparent, and instead quite predatory.:-(
The reason I say this will cause confusion is b/c Tier Lists are already showing the SA versions of these characters to the exclusion of the non-SA versions of them - just like they do the (True) Manifestations. New players will see the SA characters in videos, and senior players will rarely if ever explain just how crucial vs. not it is to have the SA versions of the skills. In essence then, these SAs are already being treated as if they were mandatory - the "normal" experience of the character, rather than an optional add-on - again like the manifestations. Except UNLIKE the manifestations, these are not something that can be earned with any amount of in-game pure "effort", and instead must be either purchased, or else gone without. This game just suddenly became a lot less welcoming to F2P (and minnows) than it used to be...:-(
On the other hand, it would be somewhat cool to see some new life breathed into these older characters - Tsukiha NS or AS never graces any of my parties, and while NS Suzette has been useful occasionally, she played a very limited role, which her SA would expand upon significantly. Except... I am too afraid to spend whatever trickle of SA materials will come our way, realizing that Power Creep marches ever onwards, and that these materials, on top of being confusing, are going to be SO MUCH MORE RARE than Chant Scripts, or even Treatises/Codices/Opuses (as currently announced anyway).
So SAs are one of those nice ideas that if they had been implemented in a "friendly" way would have been an outstanding way to make older characters be more useful in more later-game content, which would have increased the fun of the game. Though everything that I am seeing so far seems to be pointing more in the direction that it is designed to increase their profits - which is fine, they need that to stay active - but at the expense of the playerbase, shifting everything significantly more towards whales now. Which aside from not being good to begin with, seems to me to be a harbinger of bad things to come - as F2P, Minnows, and Dolphins leave, even Whales will stop spending, b/c there is no longer as large an audience to show off to:-(. Again, I apologize for being so negative - I cannot help it, this is just what I think!? - and I hope I am not ruining anyone else's enjoyment of this new feature:-P.