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Confidant is a bit restrictive in how you can build your deck with him in it and Goyf is just a very undercosted beater with no added value

Given the current texture of Modern and the overall weakness of the Storm deck as a whole, this feels like a very safe unban

Mentor (Whenever this creature attacks, put a +1/+1 counter on target attacking creature with lesser power.) At the beginning of combat on your turn, choose up to one target creature you control

The 7-cost Sabo is a 9,000 Power Blocker, perfect for protecting you from an attack, and can be used offensively for heavy attacks

Improvements that dont alter the nature of the deck considerably are exactly what you should be looking for when modding pre-cons