Possible Clues:

• "Basically"
• To a certain extent
• Close to me?
• Roughly, and a hint to the words hidden in 18-, 23-, 36- and 52-Across
• Superstar finally getting involved, some roles shifted about
• "Close enough"
• Roles played in customs -- roughly
• 'Close enough'
• " ... kinda"
• Not exactly in round numbers