As it is, my personal opinion is that the need of the furballer is easily met by the current arena.
With the huge numbers and small maps, there are always several furballs goin on. A furball is usually ended when one side gets the numerical advantage, pushes the opponent back to his base and then, running out of fling targets, attack the field.
On rare occurences, big missions are made. More often, a flight of 6 or so planes attack a field (well, that's how my squad does it, and more often it is three or four planes).
Furballers only have to go to another field to get a new furball.
If, however, there is a great desire to just furball, and do nothing but furball, this would warrant a new arena.
If there aren't enough numbers to warrant a new arena, there isn't enough to warrant adjusting the MA: don't fix what is working.
As mentioned before, I could whine about there not being the good old fights - 2v2, 2v3, 2v4, 4v4's. Always interrupted by a huge number of planes. Those are the fights that are most challenging, and to me, most enjoyable.
I ain't a cherry picker, but if I quickly want to score a good number of kills, I take my FW to a furball. I keep the speed around 350 and egress when my altitude is around 100 feet. Climb to 3-5k, and turn back. Such sorties usually result in anywhere between three and six kills.
The great number of enemy planes gives me lots to shoot at. Them being occupied with fighting others give me easy shots. Other friendlies around ensures that the enemy won't dedicate itself to my obliteration - meaning my window of escape is quite large.
For me, furballs are fun, although not as fun as a good 2v2, or 2v3, or 2v4. They're easier to me.
And, they are great fun - there's no doubt about a hot furball is great fun, so I can see where Lazs is coming from.
But, what is serious fun is taking yer squad mates and going on to strike an enemy field. Coordination, teamplay is the key. Chatter on RW is great. There is an actual goal, other than just shooting enemy planes. I.e there's a failure/success thing going in a higher degree than in a furball.
The MA is more furball friendly than ever. it is however still very possible for a squad or person to organise a strike on a non furball field. Why fix that which works very well?