I’ve had no issues with the servers in terms of latency and reg (can only speak for EU servers) but whenever I check the server browser, only half the servers are actually populated.
http://i.imgur.com/QZfHEbE.png
I feel like you could use those servers for other uses such as different game modes (dm would be great for those that never seem to care about the objective :P) or even a 5v5 server which I think would be neat.
FF would be such a PUG nightmare… keep that to competitive modes with teams actually knowing what they do, or make them not appear for quick-join games (still, some people would find it incredibly funny to go on such servers and start the round with a nice airstrike, I am fairly certain of that)
7+ servers sound reasonable… or servers with class-limits because any stacked merc becomes really annoying fast? 
FF would be such a PUG nightmare… keep that to competitive modes with teams actually knowing what they do, or make them not appear for quick-join games (still, some people would find it incredibly funny to go on such servers and start the round with a nice airstrike, I am fairly certain of that)
7+ servers sound reasonable… or servers with class-limits because any stacked merc becomes really annoying fast?
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i prefer dying to a troll sometimes over playing a game full of spam without any team awareness required.
FF just adds risk and fun, I have no idea how people can think different 