1. As on Today the Settled Status can be removed after having cleared entire Dues. See if you can re-negotiate with Citibank and get it removed.
2. The Creditors view you as Bad Client. Settled will confirm that you were a Bad Client Previously. Some Dare Devil Creditor during extremely good economy may risk offering you LOAN but he will demand higher interest rate [Well, makes no sense to me, but you see Bankers are sitting for business]
3. RBI wanted to help consumers who have "Settled" but bankers objected. Bankers argument is everybody will start defaulting and settling and if RBI asks to forgive them, the entire Unsecured Loan folio will be at risk. Thus, the matter got suppressed.
As of now, the only option for you is as mentioned in Point 1.
Best.