Legendaries + artifacts. To be clear, I love the idea behind them but my raid spot is threatened already. I chose to go Guardian originally, so my first batch of artifact power was spent leveling that. Then, after some internal guild shuffling/drama it was decided we needed DPS more so I started leveling my Feral artifact instead. Now we have a new Outlaw recruit that is probably going to take my spot as he brings more to the table than Feral and already has a legendary (two, actually, he just can't equip the second yet for obvious reasons). And I don't even blame the guild for desiring that more...
Problem is that now I'm stuck with a gimped Guardian tank or a Feral Druid. My raid time is limited, and I only joined this new guild because it fit my casual schedule, so it's just a really shitty situation to be in. In previous expansions I could reroll but now I'm kinda stuck /shrug. Really wish artifact knowledge was account bound so I could at least have a shot of gearing another toon but I feel like I'd be too far behind.
TLDR I'm salty about the RNG behind legendaries and alt-unfriendly artifact power