Hi,
I don't know from which Os version you start and go.
For storefront, I think remove the iis role and reinstall it and same for Citrix storefront is not bad.
Maybe it is useless but talking about Microsoft.. effort is limited to be confortable.
For provisioning I don't think there is anything to plan . But update immediately Citrix provisioning has to be done I think. Taking in consideration all recommendation for new version installation