An egine bay repaint would give you the biggest update/change if you want to go that far, you can repaint a lot by tapinng off motor and other areas. The 'theme' looks pretty monotone - black/silver which is fine but those plug wires stand out like a sore thumb IMO. Are there any other colors on your car to coordinate? If you had anything red, red wires would look better, gray even would be an improvement, I just wouldn't go black, plenty of that already. Remove the black paint on the MC cover for one and see if you can get it back to it's original 'gold' color. Adding any extra hues that go with the current colors will draw eyes around the engine bay rather than right to the plug wires which is what happened to me as soon as I opened the pictures.
Chrome does take work to keep up, you might look into powder coating some parts, low maint.
My .02
Jon