What nobody tells you about completed luxury projects in Noida Ext

What's the real capital appreciation potential left in TGB Meghdutam now that it's completed? I'm looking at a few options in Noida Extension, and its ₹3.66 Cr+ price range is significant. From my experience, the initial appreciation often happens pre-possession. What's the actual rental yield people are seeing here, net of maintenance? I've heard varying numbers, but I need ground reality for ROI calculations. Also, how liquid is the resale market for these units? I'm trying to calculate a solid exit strategy for a 5-7 year horizon. Is the investor-to-end-user ratio healthy, or is there a risk of it becoming a ghost society? What's your verdict on its long-term wealth creation potential?