I honestly don't care if they can make the lighting prettier or the particles more detailed. It was always the facial expressions and character animations that were weak in Metro. I would rather see that stuff improved honestly.
There is not much cutscenes in Metro and the NPC movement animations are really solid especially in LL.Anyways,take look at this. Imagine if they had the budget or at least the half of what TLOU had.Not to mention the current situation in Ukraine(Crisis in Ukraine Meant Metro Dev Had to Smuggle Xbox Ones and PS4s Into Country).
They made two amazing FPS games and I'll gladly buy them again(50% off if you own both titles).They really put some effort to it,not like some other devs.2033 is expanded with new areas,it has LL mechanics and engine(new models,new guns,additional encounters etc).If someone deserves it,it's 4A.
It would be nice if they posted a comparison video of the pc versions.