Good to see that the 24-105L thread is still alive. The 24-70 f4 IS is definitely better than the 24-105L in the 24-70 range, but the 24-105 is much better at 71-105.
My 24-105 is very much alive, it's my core travel-lens that I couldn't do without (my travel kit typically consists of 17-40 f/4L, 24-105 f/4L, 70-300mm f/4-5.6L and a 35mm f/2 or 50 mm f/1.8 MkI).
For any other application where maximum flexibility is needed, the 24-105 is my go-to lens. Helped by good high iso there's nothing to replace it imho. I consider it my mega-zoom lens (within reason).
Note that I sold my 24-70 f/2.8 in favor of a Sigma 35mm. For such a limited zoom range I rather have the creative flexibility of a prime
5D3, 5D2, Sony α6000, G16 | SY14 f/2.8, Ʃ20 f/1.8, 24 f/2.8, 35 f/2, Ʃ35 f/1.4A, 50 f/1.8 I, Ʃ50 f/1.4 EX, 100L Macro, 17-40L, 24-105L, 70-200 f/2.8L IS II, 1.4x II, 70-300L, 100-400L | E-mount: SY12 f/2, Ʃ19 & 30 f/2.8 EX DN, 16-70 ZA OSS, 55-210 OSS, Metabones SB | FT-QL, AE-1P | FD(n) & FL lenses