If you are curious, here are some specific things I am concerned that we may run into with this new technology:
(I hope not, but the following are things that we cannot reliably test/determine on our own.)
1. Does it cause any issues with users using screen readers or similar technology. (I do not think it will, but it would be useful to know that.) I am considering putting a "Disable/Ignore reCAPTCHA for this website" checkbox in the Admin console, or something similar.
2. Does it cause any problems for users using form fillers or automated password logins. I am concerned that these may be misrecognized as "bots".
3. Does the "badge" that shows at the bottom right cause any issues on small (e.g. mobile) screens. Does it obscure anything or is the underlying Google provided script smart enough to hide that on small screens?
4. Uncertain about how we would deal with borderline scores. (e.g. a score of ~0.5) Google's YouTube video above alludes to a "verification queue", but we do not have any such thing--it would have to be created in the db along with appropriate verification emails and support code.
These are some things that I am hoping that collectively we can figure out. (kicking the tires) I am guessing there may be other things that will come up.