Always wanted to do the Revell (ex- Matchbox) 'Flower' Class Corvette, in 1/72nd scale. It's a bit pricey though and, to be honest, I've nowhere to put it, and probably wouldn't get around to building it, with so many other projects earmarked for 'the stash'.
But if a 1/72nd scale Air Sea Rescue launch qualifies, I might join in, as and when time and inclination allows.