Make all product areas compulsory

Hi guys. 

When I go to create a product, the Town / City  area is marked with an * asterix as compulsory so it has to be filled in order to be saved as draft or published. 

Is it possible via php snippet to make  Attributes, Main Product Image, Image Gallery, Categories and Tags compulsory also?

This would ensure vendors would fill it out properly.

I would make everything compulsory but we have a Password Protect Product option and this cannot be made compulsory because it will put everything behind a password wall.

Thanks

Hi guys.

That works very well.

This should help a lot.

Thank you