widgets can be assigned to VTSi parameters and HW MIDI controls and thats great for parameters a user needs to control during the show. If user wants to store VSTi parameters (set via VTSi’s didicated UI) in a Variation in order to recall them later by activating this variation, then he would need to add and map Widgets for all of them even if he never wants to control any of them individually during the show.
It seems obvious, that it should be possible and may be (hopefully) not that much effort to store and recall (all or a selected subset of) VSTi paramters automatically without the need of adding and mapping extra Widgets for each of those parameters. Of course this feature might be activated by a checkbox in Variation properties.
This enables users to setup and apply different (and may be extensive) configurations of a VSTi each of them for a different part in a song very easily. Even if VSTi requires manual enabling of host automation it still would be much more easy to do it this way.
And even if todays implementation of “Variations” do not allow for this (due to internal SW architecture or whatever reason) may be some new items added to Rackspaces (like “Configurations”) can be implemented by the developer team.