Endgame Confusion: What to do, what to skip?

[Frizze]

I was actually wondering if the relic weapon you get from the questline that starts at lvl50 is still viable or outdated now?

If you do the entire quest and upgrade it all the way, the lvl 50 relic a viable weapon until about level 55. But its MUCH more work then several of the alternatives, so these days its basically relegated to glamour status. The level 60 relic is current and a valid option(though not necessarily BiS) for any class. And to build on what Estellios and Alien said, if you intend to chase said relic once you get to 60 then it would help to spend some time raising your GC level and working on your beast tribe status. Tribal tokens and hunting tokens can be used to shorten some of its steps, and you can get a big head start on it by going early.