I ended up pursuing incorporating Animate CC with Doubleclick Studio Dynamic successfully, (including creating Publish templates, that allow any designer to output Dynamic), despite Studio support absolutely being on record that they can't (don't want to) provide support, if you are using Animate.
My coworker did a preliminary GWD Dynamic campaign with white glove support from Google, leading the way. The consensus was that GWD had several disadvantages. GWD is slow. GWD is no Animate. Using web fonts, rather than whatever font you want, varied the LTF of a lockup, substantially.
Over the years I have saved lots of DCRM HTML5 templates, that for the most part seem to have been removed from the database.