Like atlessa said, sorting my weapons group everytime i respawn is a biggy. Also:
- Getting stuck on logs, or other 'carefully concealed' bit of scenery item.
- Default groups on some mechs are just.. silly to say the least.
- Falling through the floor

- Turning difficulty
- Tanks and aerospace, both using them and being on the recieving end. Dont have a grudge against them, they just seem more wild and dangerous than most mechs to pilot haha. The bombing recticle being inaccurate, tnk turret angles, lack of stabilisation etc