So if I were to use free rolls on the classic draws, when might the long-term spark outvalue the gamble of a premium draw? Nothing up right now is worthwhile gameplay-wise but it still has a better pool overall and the seasonal FOMO collection aspect. On the other hand, V.Tiger/Lobelia/Rabbit are coming soon, but are 3 draws still too trivial to bet on? I'm assuming it depends on how frequently it's worth skipping the premium draw to actually get CD sparks.
Also, how should I pick one? Is CD1 better because of core summons (despite their also being in the premium pool) or CD2 because of character substitutions (I have all the good CD1 characters but I'm still short on core characters)? But there's also vanity like summon skins or favorite characters. Are primals/providence important enough to render characters irrelevant, are subpar characters who I'm likely to replace either way worth passing up for vanity? etc.
However, classic's also all suptixable, so how does that affect each pool's value? Roburs generally seem best since they're immediately usable even in Magna and spooks aren't wasted like, for example, an Olivia spook would be, but would the immediate benefits of tixing Olivia outweigh the risk of a wasted lucksack, and does that risk decrease significantly if I use my free draws on CD? If I draw and tix from the classic pool, it seems better to tix from the one I'm not drawing from, but if I draw CD1, should I still prioritize providence summons over CD2 characters? I'm unsure if Zoi and Kaguya are that important and there's no point in tixing Zoi or Lucifer anyways until I have all the uncap/transcendence mats lined up.