Suppression as a mechanic should return although as an 'option' would be unlikely in my opinion.
It is a useful balancing tool and I would pitch it somewhere between BF4 and BF1 levels.
Oh, and INB4 "but suppression rewards bad aim.....!"
In some ways it may be fine to use the games that you have mentioned but I prefer the suppression visual interpretation of Battlefield 3 over Battlefield 4 (There is a reason why Battlefield 4 metro feels different from Battlefield 3 metro despite having similar geometry).
Besides soldier stress during conflict there is something else that suppression in Battlefield 3 is supposed to represent if you or anyone else can guess correctly then you win an imaginary cookie.
Most people I have asked don't get the answer.
