Oh I get that, by my initial point was that they've reached a tipping point and I'm now LESS excited rather than more, because they're playing it too coy. I WANT to get invested, but "we want power to defeat our enemies" doesn't help me get invested. It helps me get UNinvested, because it's just another generic villain line I can't muster any actual excitement for.
That's the problem.
To go with your rollercoaster analogy: it's like them hiding the rollercoaster from your eyes and ears, and when you ask them okay but what's the ride like they simply reply "it's thrilling, and it'll excite you!" instead of, you know, SHOWING you the rollercoaster or whatever to ACTUALLY get you excited for what's coming.
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But none of that ACTUALLY explains anything, and half of it is conjecture and speculation - you say they want "dragons to return to their primal state as proto dragons" - HOW would they achieve that? Their ideology isn't "specific" at all, in fact it's just "we want things to be our way", they don't even give a real REASON why it's preferable to what the Titans did other than "we disagree".
They want the dracthyr to become corrupted - WHY? Other than to occupy their enemies and be a diversion. I don't recall shadowflame being mentioned by them anywhere, do you have a source? All I remember is "the liquid fire that powers Aberrus", whatever that is supposed to mean, and whatever that is supposed to accomplish other than for them to "gain power" - HOW? WHY?
It's answering one vague statement with another vague statement. That's not how plans or goals work, and that's not how you get excited for something, because you know neither the stakes nor the process - not beyond "they're evil and want to do evil things".