Option grants - they are not the same for employees and contractors. And there are huge differences between them for the receivers [0]
Healthcare - companies have different options than individuals. Different countries offer different quality. And many will opt-out from expensive plans that have great coverage in favor of extra cash [1]. However, when things happen, they don't have the proper coverage and end up in situations that are very hard to recover from (we been there).
Time off - this is again not the same thing. PTO has many important protections for employees and has built in rules in the law. Contractor has no right for any of it.
and etc.
Your suggestions are generally valid, but we prefer our employees to be at equal standing with the same rights and same benefits.
great healthcare - you can reimburse the costs for insurance.
time off - you can just give them time off. :)
etc...
I think you can make your employees and contractors feel equal.