Here's an insight: Every verb should take a direct object. Direct objects are the only type of information you can specify about a verb that doesn't require a preposition, so they're the fastest. Therefore, there shouldn't be any verbs that take indirect objects but no direct object. "Go" in English is an offender, because for some reason you have to say "go to somewhere" - why is the direct object slot unused? (Except for demonstratives and a few special nouns like "home".)
All Spem verbs of motion (and some other verbs) follow a pattern. The transitive one can be thought of as the "basic" one,
since in theory it's sufficient without the other and the other is just a shortcut (which is not true in reverse).
You can actually leave them all three out:
The reason the object moved is the direct object of
The reflexive version of all Spem transitive verbs only exist as shortcuts. To continue the example,
I put the subject of
Notice that that's the passive voice! In Spem, to get the passive voice you just leave the subject unspecified. I like this because it makes it obvious that the subject is missing and that there must be one. The passive voice in the way other languages implement it facilitates bad ideas because it allows you to omit the subject while still making it sound like a complete statement. For example: "it's known that..." or "it was discovered that..." or "A study was done..." Language like this can be used to discourage the listener from asking who knows it, who discovered it, who did the study; I've frequently seen this taken advantage of for dishonesty, by making it easy it to not realize that a crucial part of the claim is being omitted.