Here is the thing - they're not going to, because DICE themselves have stated they have no fucking idea why everyone has such a hard-on for the series. Their only guess is that it was because it was the first time destruction found its way into the series and everyone remembers how awesome that was - but the destruction got better in later games, no one cared about the campaign anyway and they improved on basically everything in the gameplay department.
Most likely because Bad Company 2 was the last one that had proper server side hit detection, in fact proper server side everything, with client side being introduced with BF3. This meant that yes while the hit detection was not always perfect (something that all Battlefields suffered from) because your connection to the server was always stable and always the same you could compensate for the slightly wonky hit boxes. The god awful client side system introduce in BF3 meant that you could take a shot at one guy and hit perfectly but the next guy to pop up could have an awful connection and that often meant you would get owned. The hit detection was based on YOUR connection to the guy you were shooting at and it was a fucking mess, and last I heard it was still a fucking mess well in to BF4's launch.
On top of all that the client side system also meant you saw some of the most amazing and powerful cheats I'd ever seen. BF2 had commander hacks (annoying) (BFBC2 had a few aim botters) Bf3 introduced guys who could kill you with media packs and shoot you while you were in tanks and punkbuster is and was utter wank (though I am lead to believe that the BF series has now dumped that pile of steaming horse piss.)
I dropped the BF series part way through 3, having played both BF2 and BFBC2 to utter death during their life span, never bother with 4 because I had assumed that it would suffer from all the same issues that BF3 introduced (which I am lead to believe it did, at least at launch) BF1 has got my interest again but I am holding fire on a pre order until I get a confirmation that
a). The anti cheat system works
b). The client side hit detection, which I assume they will push on with, has seen some real improvements
c). That the game is more than a BF3, BF4 clone with a WW1 reskin.
As for the other shooters due out, I couldn't give two squrits of piss stained jizz about them especially since if BF1 turns out to be arse they will have all been utterly shat on by Doom.