Muktol

If you really want to play some creatures I would use "Spark Elemental", Vexing Devil" or "Hellspark Elemental".
Furthermore you want to get down your enemy as fast as possible, and not waste spells on his creatures. Thus, I would change "Fiery Conclusion" for "Magma Jet" (Which also allows you to see and select the next 2 cards you draw, or you don't want draw) and pherhaps "Shrapnel Blast" for something like "Shard Volley" or "Rift Bolt".
If you really need to remove an enemy (utility) creature, try "Forked Bolt"

The Coils would be an alternative to the "Ion Storm", at least if you have enough "Power Conduit" out and working. Apart from that I have no idea which permanent I could remove for the Coils.

The artifact I disliked most during my test-games was "Mycosynth Wellspring". I will give the "Power Conduit" a try and remove the Wellspring for it.
The plan to charge up the Cores won't work, because they are no artifacts. But any other artifact on the field can carry them, so they wont be lost.

That sounds like a nice idea.
First thought was to remove the "Sakura-Tribe Elder" and replace it with "Gyre Sage". I will try a 2-2 split for testing. Without the ramp, I could also change to some of the duallands to stabilize the manabase. The advantage of the ramp plan however is, that you draw less lands in later rounds.
Second thought was to switch to "Experiment One" but at the moment I am unsure which creature I should take out for this.
Only thing that concerns me is that most of the evolve creatures won't go for more than 3/3 in most games. "Flayer of the Hatebound" is the only creature that would be able to push them further.

No, the Artifacts are only here to get some carddraw (and ramp through "Mycosynth Wellspring"). If you really need one of them, you can recycle a "Undying"-creature with the "Trading Post".