Got my 2018 3.5L v6 Titanium a few months ago, only done a few cosmetic upgrades so far. Mostly inexpensive things.
Added some body color door latch plates, a ring for the headlight selector thing, changed the front emblem and added weathertech window deflectors.
On the docket is painting/replacing the front grill, smoking the headlights and taillights, LED headlights. Would love to add in the fog lights someone posted a few pages back, but it seems like it's going to be beyond me. Also the link shared to the build post for the fog lights was broken, gonna have to see if i can find it manually/search.
Grill and rims, I've been looking into dipyourcar.com. I think I'm going to give it a shot this spring and see how it turns out. Going to dip the grill and the rims a dark grey or black, then do body color on the grill inserts. Should match my emblem and car pretty well.
Link to images.