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 | EF: SY14/2.8, V20/3.5, 24/2.8, 35/2, Ʃ35/1.4, 50/1.8, Ʃ50/1.4 EX, 100L Macro, 17-40L, 24-105L, 70-200/2.8L IS II, 1.4x II, 2.0x III, 70-300L, T28-300 Di VC PZD | E: SY12/2, 35/1.8 OSS, 16-70 ZA OSS, 55-210 OSS, SY300/6.3 ED UMC CS, Metabones SB | Vintage FD & FL glass.