Rooftops

The rooftop campers that for some reason enjoy using the exploit to get up there and pick off people that cannot get up there do ruin those maps.  

Unless, you have equally good snipers that do nothing but try to kill them, they are virtually untouchable.  

And once they are there, they are all but impossible to get off by using the same lame methods that they do, parachuting in.

If I am playing a game and that starts happening, I just quit it.   It may not be cheating, but is sure seems like it

All problems could be solved if they actually had full destruction...

It would not be as much of an issue if all objectives had sufficient amounts of rubble and/or above ground and below ground(trenches, craters) cover. 

This is just bad map design when rooftop snipers nowhere near objectives can clear contested objectives because the objective has isht for cover. 

In one map, the snipers parachute onto a rooftop and can gleefully run back and forth to the edge and snipe you while you are on the objective. 

They put spawn on their teammate, put a beacon up there, and in the rare event that someone is able to kill them, they just spawn back to renew the "fun" of uncompetitively  killing other players that have no chance

They've only been developing the BF series for like 10 years, you cant expect them to prepare or have a y forethought to roof abuse campers, killing your own team's helicopter, or anything else. THEY'RE DOING THEY'RE BEST WITH YOUR MONEY

Or a dec team with a brain. It's the 6th iteration of this crap and the same abuse. DICE is stupid