Thanks for everyone's input earlier tonight:
I took bits and pieces from everyone and it all turned out fabulous. The weak point was the asparagus, but I quickly made a second attempt that turned out much better.
I seasoned the sea bass with S&P and raging river. The combination of the sautéed carrots and mushrooms along with the tomatoes, lemon slices, thyme, tarragon and parsley added so many different flavor notes to every bite. Will definitely do again!! :)
Just a hack that makes some shitty BBQ...