I have a few planes that I have to keep building. Recently I finally crashed my Raptor, had it for 12 months with zero crashes. But due to hanger rash and getting bashed around, it still had its fair share of repairs. Still flew great.
When I finally flipped it on a landing, time to gut it and put all the parts into a new one.
Result, a few mods and brought it 100 grams lighter, dialed in with in 3 flights, faster, more agile, simply a better plane.
I have also built and destroyed about 5 SU-27 style planes, lesson learned is you can make improvements with each new plane. I learned this especially after exploding an SU-27 trying to do the cobra in mid air!
Its crazy, I have made so many SU-27s, now when I build a new one, I draw out 3, cut out 2 and build 1.
But when I finally crashed my F-22 Raptor, I didn't realise how much I loved that plane, just had to have it back!