Since you were (rightly) complaining about a lack of feedback over at Uniform - multiple form and ajax , here’s mine.
So far I have tested it with the email, webhook and session-store actions on two of my sites with no issues at all. For all new projects I will use v3 from now on and I’ll try to update older sites wherever / whenever an oppurtunity arises.
New is not always better, but here I would say it is.