Customization isn't as bloated compared to BF4 and BF3, feels like a good balance between those two and Bad Company 2. In general, this feels like the next step after BC2 in design. Buildings and cover matter a lot with how the maps are laid out.
Gas grenades are one of the best tools at evening things out. Damage players instantly, force campers to hip fire reducing their ability to ADS, create barriers and traps instantly. Frag grenades are next to useless compared to the gas, people still haven't caught on how great gas grenades are.
There's a general feeling of spectacle and awe at all the shit going on, which BF3 and BF4 didn't really have.