It's good that IR is slowly converting to fully AC. This was in IR's vision since late 1990s but now the time is ripe given most people who earlier travelled sleeper now can afford 3AC travel. By 2025 they should fully separate AC and non AC trains. Non AC should only be for local travel less than 200-250km. Those complaining about crowding -- well that's always been the case. Earlier sleeper was crowded. Now AC3 is crowded. At least the pax have AC for comfort despite the crowd. However ACE should be scrapped because it's just for looting pax.