That logic applies to water as well. Light will stay the survival element for quite a good while until Michael AW arrives. Water is also pretty consistent in clearing content, too. Probably their biggest disadvantage to light is that they don't have elemental resist down debuff for quite a good while (around 10 months), so you'd need VoF to have a decent aim off-element a̶n̶d̶ ̶p̶u̶t̶ ̶d̶e̶m̶ ̶r̶e̶s̶i̶s̶t̶ ̶b̶r̶e̶a̶k̶ ̶a̶c̶c̶s̶ ̶o̶n̶ ̶C̶t̶h̶u̶l̶h̶u̶ ̶c̶a̶u̶s̶e̶ ̶h̶e̶r̶ ̶a̶i̶m̶ ̶m̶a̶t̶c̶h̶e̶s̶ ̶a̶ ̶s̶t̶o̶r̶m̶ ̶t̶r̶o̶o̶p̶e̶r̶'̶s̶.
@Cobblemaniac What actually makes me rather vote for Cthulhu is the lack of Diana & without her, you can't reach 50% def debuff, what's more, you're stuck with Mordred if you wanna maximize def debuffs (that would be 45% with Ambush EX) unless you want to use lol Gawain. And no, I'm not considering hero weapons yet coz light rag will probably be released in July, and then you have to start farming for it. Even if I did, ideally you wanna bring Hercules(Shingen burst buff EX) & let your himes do the debuffing. And water will do that for you with Cthulhu, unlike light with Tsuku.