I'd like your direct opinion on something as I know you're a lot like my in regards to passion for AST in the way that I am passionate about SGE.
I've said above and elsewhere that I value distinct cards more than RNG, but I don't think the total erasure of RNG is necessary to have what they're basically trying to achieve with this new system. If we added to your suggestions the fact that the order of the cards you draw is random, that they need to be used in that order, and there you have some alternative version of Redraw to reorder your cards with some limitation, how would you feel about that? Better or worse? And if better, how much do you think that improves the situation, if at all?
Because I don't mind having more control over which cards you draw, as that is one of the only ways I can really think to counter the inherent flaw of utility cards which is that you can't plan around them because you'll never now when they arrive. Mitigation, for example, is something you need at a precise moment. It's not something that provides a lot of value at any random moment in a fight. The other way I could think is that cards you draw do not need to be played immediately, and thus drawing cards randomly is effectively enabling certain actions to be used later, and holding onto utility cards does not restrict your ability to draw more cards.
Also, in regards to pre ShB AST... Spire was not the weakest card. In fact, it was actually the strongest card because it was the best card for turning your next card into AOE. Ewer on the other hand wasn't always a guarantee burn card because sometimes you or your co-healer needed that MP refresh. The only problem with Spire was drawing it repeatedly.