James Cameron believes that people stopped trying to exfil and started hunting the pred out of boredom. The lack of content caused that part. Before we learned all the missions and got bored it was all about the objective and killing the pred was not the norm.
Another issue is the pred only players clogging up the queue. It puts off lots of people who would like to play pred but simply don’t have time to queue for 15 mins to get 5 mins of play. Of course you can all play pred all you like but playing some FT too will help the queues.
A united FT can and should be able to kill the pred if he engages poorly. Mechanics should be put in place to allow the pred more chances to strike.
As for stealth. James Cameron has seen pred players use stealth amazingly well. It takes skill and patience. James Cameron still killed them though. Because no matter how good they are, James Cameron is still James Cameron.