ilves: I love BF, I absolutely love flying the helis, so if those make a come back I'll be a happy camper. Some naval love could be good too.
I own and played all the PC Battlefields and still to this date nothing has come closer to feeling like a real engagement to me than BF1942 64 player. The vehicles (land and sea based) not only provide an extra element of immersion, but also added many layers to the strategy involved when compared to other shooters in it's class like COD. COD seems to dump all their work on just the character aspect (perks,etc.) while leaving the game itself very one dimensional from a teamplay standpoint.
I hope they at least bring back the ability to boot up a local server to sandbox play. Of the hundreds of hrs I spent playing the BF series over the years, at least half of that time was spent playing around with vehicles, etc. in sandbox style.
For those interested in the history and features of the BF franchise here are all of their intros up to BF2142. The BF intros were designed to showcase each game's capabilities. All of the actions observed in the intros can be performed in game. The first game (1942) and it's expansion plus BFV used CG but there after (with BF2) machinima style intros that used "in game" rendering were utilized.
Battlefield 1942 Intro Battlefield 1942: Secret Weapons of WWII Intro Battlfield Vietnam Intro Battlfield 2 Intro Battlefield 2: Special Forces intro Battlfield 2142 intro