Who says South India does not have Gatimaan. It is called Vaigai Express. - Thamizh Maran

At least as per wiki, repalle is D station where as nandyal and nalgonda are referred as B class stations. May be this reference is not latest (not sure)
click here

I stand corrected on HUN part, thanks for the reference.
...
more...

When you see HUN 9, though it's larger line but capacity utilization before doubling
100 to 150% is 29% of total line
and more than 150% is 11% of total line
where as in HUN8
100 to 150% is 19%
and more than 150% is 0%

Just to add, MBNR-Kurnool-Dhone capacity utilization is 117% whereas Guntur-Nandyal capacity is 94% (point here is how many trains running in HUN9 network compared to HUN8)

Nevertheless, single line Nalgonda - Guntur single line has 8 daily express trains and 2-3 weekly trains where as nandyal - Guntur just has 4 daily trains and without single ICE.

Your reply on starting new trains is standard one which IR uses when they don't want to start any train. If you have traveled to Nandyal/Kurnool from Guntur by road then you will see the agony of passengers because of frequent traffic disruptions, pathetic roads etc. Just one ICE with decent timings b/w NDL-GNT :)