Aww, pre-Gipat wardens <3
First of all, we never were a bad class back then; just that with all the broken rubies, there were very few viable builds, and most people never took the time to learn how to play the class effectively.
With that said~
Wardens were pretty much completely changed; we're totally different from what we were back then. Basically all of our spells were changed in one way or another. Our pets got a HUGE buff; back then the pets were kind of meaningless, now half of your DPS will be done by your pet skills. (You still need to use those skills yourself, but your pet will be the one performing them; we're an actual pet class now).
Have we been buffed in any way?
Yes and no; as I said, we're completely different. We've lost basically all our AoE (Storm used to be the best AoE in the game, now it's useless) but we're really strong at single-target. We're also very good at soloing things as our pet can tank for us.
But yeah, there's no reason to say we're weak anymore. We're not.
Are we still stuck with the Goblin/Bear/Lynx/Squirrel pet choices?
Actually not, you can change your pet to a lizard or a dryad at least I think? I like my lynx so haven't really looked into that >.<
Is the class fairly difficult to play end-game? (i like challenges, whole reason i picked warden when i first started lol)
I wouldn't say we're actually
difficult to play now, but being effective IS a little bit complex. Basically, to maximise your DPS you'll need to cause cause a certain debuff on the enemy, then use a certain spell while that debuff is on, that spell causes a new debuff and you must use a new spell while that debuff is on; it's all about understanding how those chains work and using them as effectively as possible.
For more details about that, try checking out my old guide:
viewtopic.php?f=20&t=42065 ; it's almost a year old now so not everything is accurate (some spells have been buffed and some nerfed since then) but all the basics of how to play the class are still the same.
I like challenges and complexity too; I think warden is still the best class for you if you enjoy that.
How is our PvP?
Good. We're really squishy (I miss those +30% armor rubies from pre-Gipat

) but can cause a lot of damage and are difficult to handle for a lot of people since they have to choose between targeting us and our pet. Also we still have our old goodies such as Aqua Morte.