No. Just let the language naturally evolve. This "agreement" was an awful thing forced down by political forces.
Context: I'm Brazilian and during high school I studied Portuguese "one official version behind". It had more rules, but the language itself was way nicer, and people used to write more close to it, than nowadays.
It's better to have a few mistakes due to some archaic rules than to force everything to be sterile and complicate how you pronounce things IMHO
Just let people evolve the language naturally instead...
