Many times I have logged in, tried to takeoff before all the data has loaded and exploded on takeoff due to ramming a phantom p51. Or worse, just spawning inside of one. All cons, even friendly GVs, are enemy p51s until all data is finished transferring. Usually most of the cons on the runway turn into friendlies if given enough time.
How about changing the default to green (friendly) 51s? Or better yet green 190s?

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Sure, I could wait the 30 seconds till everything loads, but I still forget to sometimes when I hear "12 b17s over a48!" and frantically type .move 48 and up a g10.
Also, the newbies must get awfully confused by this.