Why are you asking a question that can’t be answer?
The game will continue to be changed and developed. You want to know what will happen for “end-game”, yet this game is in beta where the entire game is apt to change at any moment. There is no such thing currently as end game for this at its current state.
These fast-paced MMOs, I feel, have conditioned people to worry about what will come at the end of the game. People worry they will have nothing left to do.
Don’t think about the end of the game, enjoy the game for what it is as you play. This is beta, all of your progress will be wiped anyhow. Do yourself a favor, create characters, give them a test run, create more and more characters. Help you figure out what you love currently and truly enjoy, so when the game does come out you can have an idea of what you want to make-- then from there you can adventure and figure out the end-game on your own. You need to be more worried about taking advantage of the increased EXP rates for experimental purposes, than you do need to be worried about what there is to do at the end of the game. You will not have the chance to experiment like this ever again. (Unless there is a 3rd beta.)