22847/22848 is only a 18 coach train with 6 GS. Coach composition can be easily adjusted as 1-1AC, 2-2AC, 4-3AC, 11-SL, 1-PC, 3-GS, 2-SLR. Capacity augmentation of various train is possible, but introduction of new trains is very very difficult.
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I would instead request you to push for Capacity augmentation.