The question still stands, Why do Furballers fly in anything but the DA at furball lake?
Furballing is a misunderstood term. The "furball" is the highest point of "critical mass" in an ongoing melee that often wanders between the bases that support it. That nexus of action supports a tremendous variety of game play all focused on air to air combat. So you can look at it as a temporary ecosystem of sorts. While you will have a group of hard core T&Ber's there habits often vary by whim or need. There is also a second group of more E oriented pilots that try and feed of the hard corp turners, in turn you have a third set that are engaged in a more B&Z style focused on tagging the "E fighters" as they pop up to the top of the action. Many players are "multidisciplinary" and fly all three styles in a single hop, filtering in thru the top and finally exiting from the bottom. Other players only skirt the main action and look to "work the fringe".
What this does is to set up a complex and ever changing combat environment that cant be duplicated in a setting like furball lake IMO. If we look at the clip(s) I posted above all qualify as a form of furball fighting. I'm not flying around a 20k looking for a target, I'm not repeatedly B&Zing a con etc. The complex ACM and SA required to perform "leviathan level" results in a furball are extremely difficult to master. I've flown for 15 yrs and cant even get close, but the ability to work the furball in a lesser manner is all but disappearing.
I blame this entirely on the ever increasing need for the noobherd (which is now a majority of the player base) to gravitate toward the furballs if they are not rolling unopposed dirt. Invariably someone will take down one or more of the bases supporting the action. IMO the death of the furball began when formations of 4 engine bombers combined with "easy mode" bombing arrived.
Historically the "furball" was the training area for ACM, players evolved over time and many like me started off as "190 drivers" picking the fringes and then went to ponies and then spits or 38's and in the case of AW finally A-26's. When you could fly an A-26 in the top and come out the bottom 20 min later you had accomplished something. All the stages were widely accepted, yes people whined but by and large the natural order of things was understood. Everyone had the same goal in the end "air combat".