I also would like to see larger "fireteams". But you have to do some thoughts and easy conclusions on this.
1: grinding points public on a game thats makes its money with "micro transactions" will reduce the need to buy coins drasticly
2: grinding public will scare of a lot of solo players, a large audience that also will buy coins
3: now we dont even know if there will be any competetive mode or even "clan servers"
I dont except the second one simply of how the system seems to work(dynamic arranged servers) but the question is if there is a need when there is no competitive mode
4: maybe a competitive mode - not yet announced - will support 8on8 matches
Now you can also go back to question number one and ask if this could be used abusively. Maybe there shouln'd be any reward (EXP, RP AND loot) in this kind of matches, to prevent it from beeing exploited?
I realy would like to see an competetive mode, but from the publishers view of things and easy solution would probably lead to a major loss of customers.(i.e. buying coins)
The coin always got two sides on in.