I've read it, thanks.

You may want to flip through it again so that you can see how every other cryptosystem other than bitcoin takes great pains to minimize and obfuscate use of the private key, and how every PKI system in the world, again not counting bitcoin, insists on using expiration dates for keys.

Bitcoin private keys have no expiration date, and are used to sign plaintexts that are partially repetitive and predictable.  If these factors don't make your sphincter tighten, you missed some big lessons from the history of cryptanalysis.

We can't expire keys, and we can't compress ( =randomize) scripts.  The one thing that we do is discourage key re-use.  We should not abandon the one good practice that we are capable of doing without a damn good reason, even though we are pretty confident that we are safe doing so.