Phase 4 Mei, inderlok se indraprastha new line with new color code hoga, it won't b extension. DEE bhi hai on route. . Phase 4 Mei abhi bahot time hai.
red line will extend till Narela in North and further upto Singhu border/kundli (according to haryana govt) ... that will be a very long route ... so your suggestion is currently not feasible.
GC is not right at this time. Also connecting Red line and Green Line at Inderlok will be very tough. If i am not wrong, tracks are perpendicular and RL is underground and GL is elevated.
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