Custom settings in Noscript

Three issues/questions:

  1. Per-site Permissions
    It has been written in the past, that permanently blocking or allowing a website in NoScript can help identify you.

Is that still the case?
And also, why does TorBrowser not block certain sites by default for all users?

E.g.: No one needs google-analytics and similar sites. They don’t provide any functionality, and thus could be safely blocked by default on all security levels.
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  1. Sanitize cross-site suspicious request
    TorBrowser/NoScript is able to remember the choices made, and block requests from certain websites across browsing sessions.

Is it safe to save these decisions, without becoming unique among Tor users?
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  1. Cross-tab identity leak
    This new feature is “experimental”(=broken) as hell.

Can I disable this, without becoming unique?

From what I read, this just seems to protect against an active/directed attack against a chosen individual.
While at the same time, it’s breaks regular browsing. And over time, it actually massively bloats memory usage and sometimes even crashes my device.
So I feel like I can afford to disable it.