What builders don't tell you about Signature Global Millennia's ROI

Signature Global The Millennia — been tracking this project for a bit now. I work in real estate, but buying for myself feels different, you know? They quote ₹62-77L for a 2BHK, but I remember pre-launch rates were lower. Kitna actual appreciation hua hai since then? Builder toh ROI achha batate hain, but end-user vs investor ratio kya hai? Don't want to get stuck in a ghost society, yaar. Their delivery track record kaafi mixed hai, suna hai. What's the real ground reality for this one? Will they actually stick to the RERA timeline? Ya phir delays honge? I'm worried about my capital getting locked up for years. Any insights into their project management for this specific one? Any hidden charges I should watch out for?