I never moved to the free GSuite and I'm glad. I have everything at my domain forward to me@mydomain.com and that goes to my gmail address. Then GMail is set up to send mail out through my domain's email server to retain the illusion.
I assume this means you're running your own mailserver, which was something I was hoping to avoid.
It looks like Google does allow catch-all addresses on the new plan. https://support.google.com/a/answer/2685650?hl=en . I'm still very tempted to move to fastmail instead though. Email was all I really used the legacy suite for.
The annoying thing is things like toy apps which I have which are all with one of these legacy g-suite accounts (though, maybe those do all continue to work actually ?) What a mess (like, how does oauth work when I signed in with Google and now it's no longer a google account... it won't work.. gah!)
