Flew from Gatwick to Kochi(AI150) last week, a few observations:
1.Check-in was smooth, the check-in counters were manned by British Airways staff.
2.Boarding: Quick, no hassles, probably helped by the fact that it was probably around 70% in terms of actual passengers.
3. Aircraft: B787-8
Age:10.5 years from what I could find online
Exterior (from what I could see in and around the door we boarded from)- Shabby looking paint and peeling paint on the door's window edges-this was new, I've flown on many old planes before, but have never seen this.
Interior:
Cabin: This was a very tired looking aircraft and there was no effort to hide the wear and tear. Carpets, seat fabrics etc. were all worn out. Add to that the signature Air India rattles at takeoff and landing.
Seat: I flew Economy, and was allocated 18F. First off, the infotainment controller did not work, no real surprise there. It was my first time on board Economy on AI's 787, so I did not realise until later that it controlled the reading light, call button as well.
Hygiene: Zero-What really irritated me was that my tray table had not been cleaned, someone on a previous journey had spilled curry/sauce, which had dried and hardened

I just do not understand how this was missed, you would think these are things Tata can address fairly quickly since it's not constrained by supply chain issues(one of their favourite excuses lately). I pointed this out to the stewardess who I was able to speak to only 45 minutes into the flight, because my call button was not working. To her credit, she immediately apologised and set about cleaning it. She also noted my complaint regarding the infotainment and controller not working and tried a reset, which did not work, and offered me a different seat.
Meal service: Another surprise, they were serving everyone only vegetarian meals. I had selected a non-veg meal earlier, and when I enquired, was promptly served a non-veg meal after a brief delay. I overhead them telling a few passengers that the first meal service would only be vegetarian and that the second one would have both options. I was curious and with nothing better to do, took a closer look at the label on my meal. It said Y LD 8 of 20, which I assume meant Economy Late Dinner and the total number of that meal option ordered. Is this normal in the aviation industry? Do they serve vegetarian by default(which I assume is cheaper for the airline, and probably also the fact that we were headed into India) and only order a limited set of non-veg options? The second meal service went smoothly, but the food was typical airline food, nothing much to write about, nowhere near the quality and taste of AI's heyday.
Used the lavatory halfway into the flight and it was in reasonably good shape considering I went in braced for the worst after the tray table experience, but there were a few tissues strewn on the floor, that is more to do with an inconsiderate fellow passenger(s) than the airline.
The flight had pushback ahead of time and hence we landed 20 minutes ahead of time.
I was able to deplane fairly quickly, but baggage was inordinately slow, with the Priority tagged ones arriving immediately and the rest taking another 30-40 minutes. There were still a lot of passengers waiting when I retrieved my bags.
Overall impression: Miles to go, I had not flown on AI for more than 7 years. I went in with very low expectations, but the fact that something as routine as cleaning a table had not happened, told me a lot about what has remained unchanged at AI. Tata has given itself 5 years to transform the airline, but I really wonder if the time and investments would have been better directed at Vistara than continuing down this path. It is undoubtedly an emotional decision for the Tatas, there does not seem to be any other justification in my mind, when they already have Vistara setting the tone. I will be sad to see that brand vanish. I am just thankful that my return is on a Vistara flight.
I must mention that the stewardess stood out for being courteous, polite and delivering excellent service throughout, she has definitely helped her team and airline.
I also suspect that the widebodies in best shape and with the best interiors are reserved for high yield routes like Delhi/Mumbai-London Heathrow, routes to North America and such. Tier 2 Indian cities(They fly to Goa, Kochi,Ahmedabad and Amritsar from London Gatwick) might be served by their low-rent assets considering they earn much less.
Based on this, I think the earliest I would try AI again, if given a choice, is sometime in 2029 going by what their CEO says in terms of planned changes taking effect across their network and fleet.