These types of legislation are universally bad.
If your mandates make sense, the hospital will do it anyway.
If they inappropriately understaff, then the hospital will be sued for staffing problems resulting in poor patient care (like my mother-in-law's case).
Even if you assume that this is the perfect staffing model, when you force a hospital to staff in this perfect manner you have laid out here, it discourages innovation and efficience. Perhaps staff costs and good patient outcomes could be cut by combining aide workers with nursing staff in certain ratios, or by redesigning the work or in remote sensing advances. Good hospital staff (like my brilliant wife in the Chelsea endoscopy unit) look for ways to save money all the time. You've killed any cost-saving impulse with this law by mandating your perfect staffing model as it exists today. You won't be able to instantly amend this law for improvements the way a hospital could. And a hospital won't want to spend a year trying to convince you to do so.
Your intentions are good -- your outcomes are bad. I wish all you legislators could come to see this.