The phrase "more backstage" can be replaced with a number of synonyms, depending on the context in which it is used. For example, you could use the phrase "behind the scenes" to describe activities or events that occur out of sight of the general public. Alternatively, you could say "offstage" to describe an area that is not part of the main stage or performance area. "Behind the curtain" is also a good option, as it connotes a sense of secrecy or exclusivity. Other possible synonyms for "more backstage" might include "back room," "green room," or "backstage area".