Laws and regulation should never be to specific. You give very specific guidelines and times, such as 8 years, 50% of etc.

Principles would be formulated differently. I'd prefer something along the lines like:

Before remastering, let a game mature.

Cherish the initial release, archive it and keep it available.

Take care when remastering a game, to be true to the original, include a switch in the options if possible.

Etc.... maybe improved wording.