Sorry, in AAA games, rendering engine programmer and game engine programmer are usually different roles, because it's very different specializations. And a movement system tends to be more on the gameplay programmers side on things than on the game engine programmers side.
That's extremely subjective. For example, in the case of FFXIV I'd put Story at the top, because if the story wasn't good I'd have zero reason to bother with this game in the first place.For an MMO in order of importance:
Setting and Art Style
Core Gameplay Loop
Movement and combat
UI design
Story
Community
Graphics quality
You're talking about network programming and game engine programming. Rendering engine programmers aren't going to be doing any of that, not on a AAA game, where you have dozens of programmers on a project and a high degree of specialization. I agree that the netcode is bad, but I don't care because the PvP is also awfully badly designed and micro optimizing a pve dps rotation doesn't interest me, so as far as I'm concerned the game's combat loop is abysmal from a design point of view anyway. It would require a complete change of philosophy before improving the netcode would be meaningful. And none of that has anything to do with upgrading the graphics. None of the same people would be involved in any of this.I was initially using movement as an example, but if I was going to tier list the high priority issues in the game, the more important barrier for new players is the new player experience being awful, if you were going to play this game and your particular class fantasy is say a Samurai, only to be told O you will have to go through 3 expacs, about 100 hours of play time, as a class you don't want to play before you can play the class you want to play. You would probably just bail on playing. From their you need to look at the server tick rate being crap, and the movement system. Then the overall reduction in mechanics the games gone through in the past couple expacs, what I mean by this is you used to play with your mechanics alongside your standard rotation, now they are merging more and more the mech into your rotation to fit into the 2m burst window which is favoured by people who want to do world firsts, that's the largest gameplay issue they have. At the bottom of that list is HD and graphic overhaul.