I'll still be playing vanilla content...
Starting the game right before an expansion drop has made me wonder how much of the base game I need to rush through and/or skip. For instance, I want to try out fractals, but as you said they're being changed so I'm not sure if it's worth learning the current system (I'm not even sure how they're changing though, so it might not matter.)
Fractals aren't changing that much, content wise. Instead of doing three Fractals and a boss per 'set', now it'll just be one Fractal at a time. There's some other features (level goes up to 100 instead of 50, fractal weapons can be purchased, etc.) but for the most part Fractals will be the same. Any of the fights and such are probably going to remain about the same.
For now I do want to take my time and play the game without giving much thought to the oncoming content, but then I also feel like I'll be missing out on the zeitgeist that comes along with discovering all the new stuff for the first time with everybody. I also want to experience the Halloween event without being distracted, so having that drop on the same day is kind of mind numbing.
Do exactly what you describe in your first sentence, for sure. The content is going to be there for a long time and they want each zone to function like the Silverwastes or Orr, where there's events that players want to engage in repeatedly instead of just 100%ing it and leaving it a ghost town. You'll miss the insane rush of everyone trying to do everything, getting enough hits in to get event credit and running up against the inevitable bugs, etc. If you take your time and enjoy it, you'll not only miss all of that but you'll be able to appreciate it without 200 people pushing and pulling you in every direction.
I've been quoting this since before launch, but
this article from Kill Ten Rats still sums up my perfect approach to Guild Wars 2;
With the imminent launch it is so hard not to imagine play. This time it’s for real! My character’s decisions will matter. I will be stuck with their eye color. I cannot re-decide critical life decisions like my lost sister or dreams of the circus by going back. It became too much. I moved our conversation to generalities instead.
I will need to decide a final character’s race and profession before Saturday. However anything beyond that feels like I will be hurting the experience of just playing. I don’t know when I will hit 30, or when I will begin crafting. I have no clue if I will seek out points-of-interest or jumping puzzles, or save them for some rainy day. I don’t want to know either. I want to Just Play.
I decided, cutting off my friend, that I could not plan anything else. I didn’t know, and I didn’t want to either. I wanted to just walk Tyria to create adventures as I went, you know like Caine from Kung Fu. Guild Wars 2 supports this playstyle. I want to be present in the game world. I cannot stop to smell roses if I don’t even notice the flowers.
The whole article is good, and not much longer than that excerpt, so give it a read if you've got a sec.
So many games (and GW2 is no exception) give you a big long list of things to do because for some players, they simply don't know how to self motivate (thank those players for the Renown Hearts we have to put up with). Unfortunately for everyone else, there's that nagging checklist and constant UI element saying "Go here", but luckily GW2 only marks the most obvious things and leaves a lot to discover on your own (including events, which there's no checklist for; 3 years on I still see new events about once a week). There's also no gear treadmill to worry about falling behind on.
Wander the world, in whatever direction the wind takes you, doing good by everyone you meet, player and non-player character alike. I think the only time I'm ever focused on going anywhere and doing anything is Guild Missions and the first few World Events after reset (and then only because I'm trying to generate some extra money for guild expenses in HoT).
I was just wondering if we should do a guild run through the new maps or something. Or perhaps a clock tower run.
We'll have to see how the maps work; apparently large parts of them are behind barriers you need Masteries to access, Metroidvania style (except instead of items, it's experience-based). We may not be able to run through much more than Verdant Brink before we hit some of those barriers.
Clock Tower run is.... well, I'll enjoy listening to all of the swearing in Mumble if that's what people want to do.