I believe the Mossie is the best mission plane in the game. The RAF historically accurate missions I run in them have been 100% successful. The problem is getting guys that want to fly them, its simply Hell getting these guys out of 110s. My RAF missions feature Mossies with 8 rockets and 500lbs's in the bomb bay for GVs, "and all that MG and cannon ammo", Typhies with all that cannon ammo and bombs, Goons in RAF skin, Spit-16s with 2 rockets and a slipper tank, and I even include Tempests, with all that cannon and extra fuel, for guys that want to fly a perk airplane.
1st pass is to take down guns with rockets and BLDNGs. Then just look at all that cannon taking down the town while Spits fly cap. If I need to I task some Typhies and/or Mossies to take out a VH.
Thing about the Mossie is its so fast, even in the grass. Except for the goons the entire mission is barreling along at 330+ mph NOE which makes it almost impossible for an enemy to react fast enough.
The Mossie is a one airplane wrecking crew and I love the thing. The problem is in getting guys to just try one once.