Please note - this is not a serious list (hence in Off Topic) - so please aim for amusing in your responses and I'll try and update the list with any which tickle my funny bone enough.
My list:
- LRMs - when my poor jenner is forward scouting and ends up on the receiving end of 3 billion LRMs and gets dead this is not fair and LRMs should be nerfed.
- Players who achieve over 1,000 damage in a match - they're just showing off and need to be nerfed.
- Pings under 100 - as an Australian player my average ping is between 230 and 270. This means that low ping players are unfairly advantaged and they need to be nerfed.
- That mech who we keep shooting with lasers, cannon, missiles, rude words and is red all over but just won't die damn it! That mech also needs nerfing as they must be cheating.
- The player who manages to land a long distance shot (particularly across the water) usually with a Gaus rifle - they must be botting and need to be nerfed. Yup - can't be skill - has to be a bot every time. Particularly if the dare hit me. I'm here to be LRM'd to death (See 1.) and you are just being show-offy and inconsiderate.