Re the OP and " will a curved final approach be possible one day?"
From a pure aviating POV it's been possible since the days of the Wright brothers ...but in the context of this thread, airliners and a poor'ish weather approach using a curved segment connecting to a short straight final leg (e.g; typically a couple of miles or so) that was done at the old Hong Kong Airport for years, is still done elsewhere e.g. JFK, Tokyo HND and these days with advances in navigation systems it is a form of approach architecture being increasingly seen elsewhere. I think the bigger challenge will be the interaction of these proposed new routes with the rest of the controlled airspace in that part of the world.
I can’t link to the Guardian article as you need to have posted 10 times to be able to include a URL.
I take it this is the article:
https://www.theguardian.com/society/...-mental-health
There's an older related FT article here ( apologies if be hidden behind a paywall)
https://www.ft.com/content/3305a2c8-...1-4ff78404524e
From which:
..“independent parallel approaches” (IPA)" ..."involves new arrival routes into Heathrow for certain flights. Heathrow conceded that “some of these flight paths could overfly areas that are not affected by Heathrow arrivals today”.