After some time, I'm working on word order change again. And these are changes that I invented recently, but first I'll explain some terms:
O.GEN - direct object of verb, being in genitive case
V.Noun - verbal noun, action of doing something
Part. - a particle, of course
Remaining terms should be clear
First, change SVO>SOV, where O.GEN V.Noun is action nominal. It should appear in a language before, because as far as I know, action nominals involving genitive should be rather in V.Noun O.Gen order, because of standard genitive and possesed noun order in an SVO language.
SVO>S Aux. O V.Noun> S-Aux O V.Noun> S O V
Second change is one of kind SVO>VSO. It involves right dislocation and grammaticalization of subject and object pronouns, like in colloquial French
SVO>Pron. V Pron., S, O>Pron.-V-Pron., S, O>V S O
Another change, from VSO to SVO, by topicalization of subject and grammaticalization of subject pronoun:
VSO> S(topic), V Pron. O> S V-Pron O> SVO
Second change VSO>SVO, now involving evolution of an auxilary
VSO>Aux S V.Noun O>Part. S V O>SVO
The last change I have invented so far, is one from SOV to SVO. Like in the first change, it needs a change of order of genitive and possesed noun:
SOV>S Aux V.Noun O.GEN.>S-Aux V O>SVO
What do you think about my changes? Do they look plausible?