OT but re cabin heating.. I flew SQ F on the new suites.. which are amazing and fantastic, but the cabin was so hot I was sweating in the PJ's !!! lol
The next SQ flight I took back had a very cool cabin, so it's just variable...
re QF F amenities at SIN... I wonder what's the most important things for transit pax or Originating pax (in SIN) .... for transit? Maybe a shower, and maybe someplace comfy with a snack. There's lots of food on the flights. After LHR-SIN many would want a shower.. so my question is... do F pax get priority to take a shower? That would be very worthwhile IMHO.
The reserved seats and table service may be a QF F lounge "lite" but it's probably adequate more or less for an hour or so transit IMHO. Sure, would one want a "F" lounge? Well BA possibly? Heck I may even get up and walk the terminal for a bit after sitting heaps, or just having the shower to refresh.
of course different people will require/expect different things from their lounge experiences.
Remember ex-LHR for years the "better" lounge in T3 was BA Galleries F, which is pretty average.. then CX renovated their lounge and has a F side, and now QF have the London Lounge so.... quite a few options. The QF lounge though is again a hybrid.. Better than SIN in respects, but still not dedicated F.... clearly the way QF is going.