RSUs are taxed as soon as they vest. This means that employees with RSU grants are continuously accumulating illiquid but taxable income based on the company’s current fair market value. This can prove disastrous for employees who have already paid taxes on RSUs whose values have declined precipitously.
I wonder if you could introduce a kind of "Franked RSU" where the company pays the tax obligation at vesting (for certain agreed taxation jurisdictions)?