I don't know if I'm imagining things, but I just flew HEL-SIN on OH-LWG and didn't feel nearly as cramped as on OH-LWC half a year ago. It felt like I had a couple of cm more space in a few critical places.

I caution you that this could be 100% in my head, though.

Something that *definitely* improved the overall experience was that I decided to become more proactive about the missing foot rest that I've been complaining about. I put a folded blanket under my legs and managed to find a seat angle that was pretty ok. I no longer slid forward and a lot of pressure was taken off my ankles. (Obviously I shouldn't need to do this, but still...)

I also slept better than I've ever slept before, and a crew member recognized my status and welcomed me aboard. Quite an enjoyable flight.