Are there any thoughts on redoing GW1 with better graphics and maybe new content? There is 100? years to play with for added story. Seeing how "reboots" are a thing these days.
for the graphics part of your question:
there was a recent update to the engine
so it now looks better if you turn advanced on in graphics settings
https://wiki.guildwars.com/wiki/Game_updates (May 9th)
I would buy it in a heartbeat but unfortunatly I don't think it will be a thing.
Did they not cover this before stating they wouldn't be releasing an HD version of the game, it would probably require a ton of effort to do that anyway.
It would be a lot of work in non-obvious ways. The current game download is almost 4 gigabytes, which is the largest file the old engine can process. So if we figured out a way to up-rez the textures, for instance, we couldn't download them without rewriting the .dat file manager.