Put an expiration date on the storefront and make it clear that your software is...

  Put an expiration date on the storefront and make it clear that your software is not guaranteed to continue working after date X

False, it says[0]

  providing reasonable means to continue functioning of said videogames without the involvement from the side of the publisher

It MUST be possible to continue playing the game using reasonable means. It is not sufficient to declare an EOL date.

  Have your server source code (stripped down of proprietary stuff) ready for public release at EoL

This would only be sufficient if the proprietary dependencies are reasonable easy to acquire.

  Allow customers to reverse engineer the binaries and communication protocol after EoL

I don't think this reverse engineering could currently be disallowed in the EU, so it would not be affected by the initiative.

  Package dedicated server binaries with the game

True, it would meet the requirements of the initiative, but it would be sufficient to provide the server after EOL.

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