Neilshs you can make pretty much any instrument sound great, i have learned this from pretty much every demo you have done even with the first versions of the G70 when it was generally regarded as sounding poor.
What might be useful is posting the same demo using the best sounds from the previuos G70 OS. If improvements have been made sonically then that would be something we could assess. If the OS update was simply to make using the instrument easeier, then we cant assess that from a demo. what would be useful is if you can tell us what the new OS version has enabled you to do that the previous one could not ?