Stealth does need a big update.
If there is ANYTHING in combat near you, you should just immediately go into combat mode, regardless of the current state your on (invisible, stealthed, ect).
Yep, we pointed this out since the EA started but I don't think we've ever got anything resembling an acknowledgement.
Admittedly it's not an area where I personally focused too much attention or effort, because at some point you have to pick your battles (and we also had stuff like "Healing food", "Backstab advantage", "elevation advantage" etc. at the time).
One common objection was "What if my co-op partner enters in a battle I don't want to participate to and I'm just in his proximity?" at which my personal take would be "Well, tough luck, sucker. Go around with better people next time".
If I was walking down a street with a friend and the moron suddenly started swinging haymakers to random pedestrians, you can bet your sorry ass I would end up involved even if I wasn't planning to.
