I do have a Godin ACS 2016 (to be used with my GR55), and it is a fantastic guitar to play, but the direct output piezo recorded sounds....not good (think that this is something common for all piezo) .
To start with it I just slapped a reverb on it but was not satisfied. I then found out about IR files, and I have tested a bounce of files in my Logic Space Designer plugin (found one of a Gibson J-45 1943 Dazzo that I do like).
But U can always do better. If U had this problem , tell me how U solved it.
free IR file database ( say 200 IR files of different guitars)
Best Regards
P-G