From someone who put about 750 hours into GW1, and ~300 in GW2.
1) END game there was nothing to do. You had those dungeons to grind to get armor... And that was it.
The end game is what you make of it. Originally it was basically "farm Orr." Now you've got Fractals, but the big push is the new Living Story updates. You're getting new content to work on every 2 weeks. I wouldn't call it an "End Game" because it isn't ending. You're always getting new stuff to work on.
2) Guilds had no purpose, NO GUILD HALLS!!!!
There are still no Guild Halls if that's all you care about. Guild have plenty of purpose, though--aside from the community, you get buffs and missions to run (and you get rewards to buy some cool items from those missions.)
3) world v world was a mess, no skill just like a bunch of dudes doing random crap on a large scale...
It's pretty organized now. Our server is no longer in the top tier, so I have a lot more fun jumping in to do it. Small groups can play a role hitting camps and ambushing players, while larger groups taking the main points. It's a lot of fun, a great way to level, and would be my main timesink if it wasn't for the new content they keep throwing into the game.
4) PvP was crap, no HA no GVG no TA no RA just this weird pvp system thing in the myst.
They've been working on it, but I've never gotten into it. It is not near GW1's level. I think a lot of the original PVP crowd has left, but they are working on improving it.
5) this bugged me a lot... Auction house was broken after legit 5 days. Everything in there was being sold at merchant price... In WoW even like lvl 25 items are sold for a actual good profit... in GW2 everything was being sold at 1 copper more than the merchant.
It's pretty much always up and people can make pretty large profits off of it. Your regular gear (blues/greens) should just be vendored because they're so common, but there's a relatively healthy economy at work now.
6) the game was a bit crappy optimized I had super hard fps drops
Other than a brief period after the last patch (about a day) I've had no issues with the game in a long time. They've done a really good job here.
7)you lvled so fast that buying armor and weapons was useless... I bought that tear1 faction armor for my charr... after an hour I was dropping stuff worth 70 copper that had better stats...
That T1 faction armor is just cosmetic anyway. It's not worth buying weapons and armor if you're getting regular drops 'til you get closer to 80. If you're worried about the patchwork look this process provides, you can use transmutation stones! I like not having to buy stuff, though (Which they ended up effectively doing in GW1 after Prophecies, since you hit 20 so fast in the other expansions and then you'd just get the max armor.)
8) the epic focus on builds that made gw1 unique and awesome has comepletely vanished...
It's not the same thing, but they're still important and being tweaked all the time. You can swap things out on the fly instead of having to fall back to an outpost to change skills now. But, no, you won't spend hours perfecting a specific build to farm a particular area. I don't see that coming back.
9) big empty world... felt like gw1 after the released all the expantion packs... a lot of empty outposts.
There's zones that have lower population, but the recent champion fix has people roaming around a lot more. I can't compare this to GW1 where you played in an instance all the time so you never randomly ran into people outside of outposts.
10) this is the one that hurt the most...
Guild Wars1 had like atleast 150 skills per class... and you could combine 2. So 300 per character or something. I might be exaggerating but it was a lot.
Guild Wars 2... Has about 25 skills... This killed it for me hardcore... No more hours of thinking and calculating for a ultimate 8 skillbar of glory... Ok it's true if you switch weapons you have a bit more... but still WTF... I was so disappointed that they did that.
Sure, there were a lot of individual skills. Weapons are the big focus in the new game, since you've got 5 skills per weapon set (and since you can switch back and forth that covers 10 skills for you.) And they're working on adding more weapons, skills, and traits to each class (they've said there'll be new stuff out before the end of this year.)
Ok now can anyone tell me if they fixed those 10 points?
At the core of it, i t sounds like you want to play Guild Wars 1 again. You'll continue to be disappointed if that's all you want, and if that's your focus you will never enjoy this game.
That said, I think they've addressed a lot of your concerns and are continuing to. There's nothing to hold you back from logging back in and giving it a shot. Join up with GAFGuild! It's a lot of fun.