Some of the "legacy" features are being retired, or have already been retired, among them, the "Call options" of recording a call or transferring a call to another linked number. Groups & Circles is undecided right now. It's been the source of a lot of confusion and unintended behavior over the years, e.g. a user forgetting that they have set up the rules, or the system unintentionally ending up with one of the linked destinations being disabled. The feature in its current, legacy state, will probably go away, and perhaps they will (or won't) add something like it later.
The main reasons for some of the feature changes are: relatively little use, making ongoing support and regression testing not worth the cost, or features that were designed primarily to work with PSTN calling, which don't work across the new VoIP-centric platform.
Call screening changed recently with the new platform. It isn't documented at the moment, and it may change, depending on "hate mail" feedback, but my understanding is that all calls from numbers not in your Google Contacts will be screened with the "state your name" prompt, and all calls from numbers in your Contacts will not be screened. I haven't tested it lately, so this is just what I've been told, not what I have taken time to test and validate.
