Yes agree. Railways is increasingly these days trying to reduce layover period and increase rake utilisation. In case of Kerala express, train is stationed in Delhi for almost 20 hrs and in TVC for almost 22 hours. So there is a good possibility wherein railways can look at reducing layover period time at least on one side. But considering that it is such a long distance train maybe they might not think on these lines and look at safety/maintenance aspect and give these things more priority