You have three lenses covering 85mm and 100mm, but none wider than 24mm.
If you want ultra wide, you might look at a 17-40mmL. Mine was a good lens, I just never warmed up to ultra wide shots. I now have a 16-35 and it gets very little use. You need to be a person who likes the wide shots I guess.
I'm finding that I no longer use my 35mmL, 85mm f/1.8, 50mm's, or even my 135mmL since I bought the 24-70 MK II and the 70-200 MK II lenses. I sold all three of my 50mm lenses, and my 85, but still have the others. My 100mmL is staying, its a lens I'll keep. My 24-105mmL now gets little use, but I've kept it.