Is the magic from Scadrial the easiest to use on other planets because the Allomancers/Feruchemists gain access to their power through having a portion of a Shard in their DNA?
Does Hemalurgy on other worlds in the Cosmere work with any Hemalurgic spike, or is Atium required?
Does each, for lack of a better term, body of a shard have 2 purposes? A common use and a true use? Like how Lerasium beads can either create Mistborn or the RAFO-true-purpose (maybe preserve a Mistborn to grant immortatily???) or Atium being able to either make you an effective killing machine or steal any allomantic/feruchemic/shardic ability (uber-parisite, much?)?
Is Hoid able to worldhop, lightweave, time dilate/slow age, etc. so effectively/easily because had access to a pre-Shard magic system? Kind of a grandfathered-in setup in that he had access to it as the whole, so he retains at least partial access to the parts and just has to figure out what changed in the division in order to use it?