I run this build in high-end gear (i.e. 3k Woh with 90+ EB) and want to discuss the option of cubing Krelm's Belt instead of Nemesis and exchanging Conflagration with Dominance. That means of course to swap Nemesis manually, which you already commented as too stressful, but in my experience the additional speed gain makes up for that one second per shrine/pylon. Dominance is required to make the Belt buff permanent, since it does not disappear, if your shield absorbs the damage.
With this, the fully buffed movement speed is 25 (base) + 25 (Krelm) + 30 (teleport/illusionist) + 25 (Wreath of Lightning) + 50 (Warzechian) + 25 (Scramble) = +180%. Even at the start of a rift you still get to +80% after using teleport, which is, according to d3planner, the same as having a dimensional speed pylon active.
I've run this yesterday together with goldwrap and TR offhand (I do not really need the additional 20% damage for TX) for permanent shield and the movement speed is just insane. It really hurt when I switched Krelm's out for GR60 speedruns, it just felt so slow compared to before.