I will say the opposite would be good. TRL is the main line platform and so PER. They can come in full speed make a stop and leave in full speed whereas AJJ they had to crawl.
Speaking of which, I hope they make AJJ in such a way like Dahanu road. Meaning make the two EMU line join with PF 1A and 7 left most and the track 3 and 4 express line to PF 1 and 2 direct so train towards KPD run at full speed. And then a...
more... new two tracks from express line 3 and 4 can be formed that should go to PF3 and PF 5 of AJJ - that would turn to a main line towards Renigunta - this would be a perfect alignment. The current alignment is a mess that express has to make slow shift to EMU line for KPD , and twice for Renigunta - deep mess.