Looking at the factory spec, nothing is shouting out to be upgraded, as with others, keep as is, until you need to replace parts through wear.

The only thinks which look dated on the bike are the handlebar, at 650mm, they are narrow for a current bike, and the stem looks long as well.

Would be keeping the 1000-1200 back in case you need a new frame, a lot of guys I ride with have had bikes from the fuel series, and are now on there 2nd/3rd frame, all bought from new so have had these covered under warranty, you won't have this luxury as you got it 2nd hand.