I think the Spit IX is pretty close to the P51-D, and if one isn't perked, the other shouldn't be either. Fact is, there really isn't that much advantage to flying the Spit V... I do it because its fun, but you got 250 cannon rounds, the 303's are worthless, definetely don't think it should be perked.
As for the fuel porking, I'm all for the new way and I tell you why. Yeah its true that attrition is a product of war, but I don't remember hearing any stories of P38s coming into a base at 15k, releasing their bombs over the fuel dumps, then beating their ordinance to the ground as their plane disintegrates as they surpass mach 5 on the way to becoming a pancake, only to re-up and do it all over again. It only took about 2 of these dedicated souls to completely shut down the front line, and kill every fight going. Now attrition is one thing, but that is WAY too easy.
Also, teamwork still exists here. Frankly I like the new gameplay. If I were to log on to the Pizza map at about 2a.m. central time and look for a fight it became quickly apparent that I should just go to offline mode and play with myself

(You laughed, I know you did). Now at least I can up with my squad, hit a large enemy held area and work together to seperate the enemy and get kills. Look at the LTARs, they up in GVs with half their squad in M3's supporting them.. You might get one or two, but its tough to take them all out... there's another good example of teamwork. I say BRAVO to the death of the suicide porkers.
Join the furball, coming to your area soon!
--Mike/Howitzer