User blog comment:FairyRaven/Fairy Tail vs. Alvarez Empire! Place your bets!/@comment-203.215.120.84-20150916112825/@comment-25111584-20150918100242

Lucy still needs the key, even though we didn't really see her using it during the Sagittarius Star Dress. Otherwise the whole Star Dress concept would be a bit ridiculous (although I think it is kinda ridiculous anyway, but eh).

Tbh, I hate the idea of CSK Star Dress just being a Demolition Fist equivalent for Lucy. And I'm not fond of the idea of seeing Lucy as a melee-combatant. Mid-range (whip) is cool and long-range is awesome, but melee would just feel extremely out of place, imo.

If she ever does don the CSK outfit, I'd rather it be a one-off ability that gives her total control over all Spirit for a certain amount of time. Allowing her to speak with them telepathically. The general of an army, though not a tyrant. Weakness would be that it doesn't really enhance her abilities by much, so she has to guard herself with other Spirits. At least this'd make her use CS Magic in the proper way rather than the sickeningly stupid idea of wanting to fight beside her Spirits, which means that she obviously becomes the focus as defeating her is equivalent to defeating all the Spirits. >.>