I don't doubt they'll expand upon them, what I'm worried about is that they'll add different options at each stage, but not increase the cap past 7 trials, meaning you won't be able to upgade one you've already finished now any further (unless they let you knock it down a stage).
I know I'm being pessimistic, but based on SE's past record with Augments, and moreso with Evolith, I feel justified in it.
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