I suggest the buffs below to make the VF-series more useful:
+) VF-56: Resistant to frozen, massive environment and snowballs, slowdown zones (preserved speed and maneuverability)
+) VF-66: Also resistant to hot environment, fireballs and overheat zones (harden against all external heat)
+) VF-76: Also resistant to dark environment, lightnings and toxic clouds (hazardous environment) (protected from every environmental factors except mechanical attacka (can still be hitted by other projectiles like eggs, guanos, neutrons, lasers, Dr. Beaker’s blue potions…))
These buffs seem extreme, but consider the current weaknesses of the VF-series, I think it’s reasonable to make them more worthy. They’re still not that helpful in competitive missions, but they might balance the powers of each series. What do you think?