I must be easier to please than most, but my idea if I had unlimited time and money isn't very complicated.
Silver would get redone with fresh paint and rust repaired, etc, as well as a nice set of 30" AT's.
The Goblin would get Calmini 3" suspension lift, HD rear axles and T-case gears, ARB Air Lockers front and rear, a snorkel, and other stuff like a CB, air compressor setup, finish up my rock armor and bumpers, etc...