Do I go directly to the most currently or to I patch everything in between?
It depends on whether you are using the default VMware version, or a vendor customized version.
With the VMware version (assuming you dont's have additional drivers/tools installed) you may update/patch the host directly to the latest build.
In case of vendor customized versions, first pach the host to the latest available vendor image, and then apply additional patches. Vendors usually support patching their latest builds within an "Update" release.
Is there any easy way to remove or rollback a patch?
In most cases you can roll back by pressing "Shift-R" (there's a 5 seconds boot delay) on the ESXi host's console while booting it.
André
