It will either remain unaffected because of 'Rajdhani priority' or will go down. Degrade because I have feeling that SEE & HJP wont allow a "Rajdhani" to cross through their station without stopping it. Loop line merging to main line after SEE & lack of Platform at HJP (read in some IRI blog some days back) provide both stations excuses to detain Rajdhani.
Also merger at DNR will create problems. Time will tell what happens.