No, I don’t think BITS will ever get an IIT status. The IITs are no longer the statement because their brand value has been diminished owing to their increasing numbers. The reason why IITs gained fame in the first place was because of their exclusivity which has been hampered now.
BITS on the other hand will never choose to dilute its brand name as it stands high with the Birla brand. It has been maintaining its exclusivity and the IIT status will do no good to its reputation.