I am not really sure that I understand exactly what your scenario is. If you have two forms in your page, then you can create two separate validators that will handle the validation of each forms, that wil handle the onblur and onsubmit validation separately.
As for your suggestion - please submit feature requests for the same in our UserVoice
section, so we can see them implemented in the future.
Join us on our journey to create the world's most complete HTML 5 UI Framework - download Kendo UI