Different Delphi versions with VCL host / plugin

Some time ago, I tested a demo version of Hydra.
My goal is to split a VCL application into host and several modules.
The one thing that prevented this so far was the requirement to use the same delphi version for host and plugin.
I understand that Delphi components have to be the same version to be shared.
But what if data exchange between host and plugin avoids such datatypes.
I dont want to use runtime packages at all, disk space is not of concern, the plugins can be large.
Would this be possible using Hydra ?

Gerhard Sachs

not yet. Hydra requires runtime packages for working.
without usage of packages, errors like Cannot assign a TStringList to a TStringList will be raised.