Looked over the list of builds. I disagree that Explosive blast has been hugely impacted here, since most channeled EB builds already required fixed position and ramp up / time for procs to occur. The delay is impactful for nephalem rifting EB channeled though.
I agree in general sentiment though. Weaving casts gave builds like channeled meteor and twister more depth.
I happen to prefer the non channeled variations of some of these… Twister, FO… but that’s beside.