Fluger I know you said not codex specific but I am going to blatantly and belligerently defy you. I would say get rid of the battle focus for eldar. I know eldarers love it but it is ridiculously time consuming to play in tournaments and really unfair for maelstrom missions where you vastly benefit from being on objectives turn one.
Now getting back on track, I would say get rid of mysterious objectives, mostly because everyone forgets about the sabotage one. (conveniently I assume).