1. Many of the limitations of the type you are worrying about are not because of the client machine so much as the server/networking technology. They discussed some of the graphic adjustments made for ARR previously and this was made clear. For example, 1.0 often cheated by copy/pasting a lot of visuals to make large areas without putting so much strain on the technology. Do we really want to go there again?

2. Some people use the PC version with bad PCs. The entire benefit of PCs over consoles is that they are scalable, and the game is already scalable across platforms (the PS4 version looks considerably better than the PS3 version, for example). What kind of graphical upgrades are you thinking about that would be so significant that it would require dropping all support for even the PS4? The PS4 is a better PC than the kind of PC I would buy to replace mine if you forced me to switch platforms, so I would still be holding you back with my lack of budget either way.

3. Consoles are more inclusive and easier for the developers to troubleshoot without factoring in unique customisations. For example, the teething issues with DX11 are not being caused by any limitations on the console side. It would be more productive to push for improvements for PC users without trying to alienate people with smaller technology budgets than yourself. Console gamers were already left out throughout the entirety of 1.0; why are we always the scapegoats for everything in this community?

4. Personally I would rather have more responsive gameplay and fixes for all of the things which need fixing instead of more detailed textures at this point.