From a new Player perspective I think Tera missed a mark in Showing Dungeons while doing quests.
From 20-65:
You either continue the Mainquest (with sidequest if you want) or hop from dungeon to dungeon increasing your gearscore and lvl.
Sadly It would have been awesome to see both combined when it comes to the complete Tera Gameplay - It has the typical fetch quest or kill quest which CAN get boring pretty fast so a visit in a dungeon would spice up some things but most of those dungeons from 20-65 will be skipped completly.
But this is also kinda a nothing burger take since the offical work died and we have to make the best on what this Server can offer.
Late Game Tera is just running Dungeons up the wazoo to grind and increase your gear. For me the fun part in all of this is learning the dungeon and accepting if you do terrible and just play floor heating tester.
Also from what Ive heard the Test dungeon and NPC got very late into the game which is just complete BS but oh well.
With the current lack of active players is rather the hard part to find a Dungeon Team without a active guild that cares to help out (yes I tried the LFG feature many times and yes most of the time you wont find players)
As I said in another Thread Tera is just one huge nostalgie trip/vetaran game that dont shoo away new players when they are willing to learn but the current Guild System is a problem but thats just my take.
For new players a lvl 70 Scroll would be a not so fun thing you start with every skill learned (hate the idea you have to buy skills but oh well) and then you just suppose to hop into a dungeon and figure out how your class works + which glyphes are a must/are the best all the other thing that is involved - we have a 65 scroll now but with 65 the real grind starts until you reach 70