If it is introduced via PGT by railways might be fine but if introduced via CBE-Podanur-Pollachi it will only contradict what they are saying and will also create unnecessary dissonance with passengers between PGT-POY who might feel undone by the decision. Lets wait and watch.
As regards the other proposal for trains to GHY, it seems SR is more keen on running these trains whereas i guess more push should come from NFR. A daily antyodaya between ERS or KCVL-GHY can really help solve the issue but would require at least 6 rakes