Chances are, it will just become a kleptocracy, without the ideology.
They will not become a “liberal,” free-market democracy with limited government and rule of law by any sense - but after Mugabe goes, the question will be: will they be able to negotiate and manage a successful division of the spoils and power among the ruling clique, so that the country can be stable and people can get on with building their lives?
Or will a strong-man need to come to the fore, as with most African “republics?”
Mugabe has already “redistributed” most of the stolen wealth and land in the country. There is little left to steal.