I don't know why this would prevent people from working for them. I'd see such a complicated scheme to split compensation amongst founders as perhaps a slight minus , but I know plenty of people who want to work for cash+bonus. I'd much rather get a competitive (with real businesses, not Valley startups), sizable cash bonus than equity in almost any startup.
Not sure why you have the veiled threat in there, but we're not exactly hurting for talent right now and the staff we do have are more than happy with the arrangement.
You have your employees bid on either getting paid or taking equity every month?