Yes, the $1000 minimum has been removed, so Zorro can now remorselessly wipe your account empty.

Re-optimizing does not work because training executable strategies does not work. It worked in the beta versions because that versions contained the executable compiler, which has now been removed for the release. It is only contained in Zorro SE.

We will however regularly upload new Z1/Z2 parameter sets even when no Zorro update comes out. Z1/Z2 can be run at least 5 months without re-optimizing - probably much longer.